git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl-agn.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/mac80211.h>
  44
  45 #include <asm/div64.h>
  46
  47 #include "iwl-eeprom.h"
  48 #include "iwl-dev.h"
  49 #include "iwl-core.h"
  50 #include "iwl-io.h"
  51 #include "iwl-helpers.h"
  52 #include "iwl-sta.h"
  53 #include "iwl-calib.h"
  54
  55
  56 /******************************************************************************
  57  *
  58  * module boiler plate
  59  *
  60  ******************************************************************************/
  61
  62 /*
  63  * module name, copyright, version, etc.
  64  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  65  */
  66
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
  76 #define VS "s"
  77 #else
  78 #define VS
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  82
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT);
  87 MODULE_LICENSE("GPL");
  88 MODULE_ALIAS("iwl4965");
  89
  90 /*************** STATION TABLE MANAGEMENT ****
  91  * mac80211 should be examined to determine if sta_info is duplicating
  92  * the functionality provided here
  93  */
  94
  95 /**************************************************************/
  96
  97
  98
  99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 100 {
 101         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 102
 103         if (hw_decrypt)
 104                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 105         else
 106                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 107
 108 }
 109
 110 /**
 111  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 112  *
 113  * NOTE:  This is really only useful during development and can eventually
 114  * be #ifdef'd out once the driver is stable and folks aren't actively
 115  * making changes
 116  */
 117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 118 {
 119         int error = 0;
 120         int counter = 1;
 121
 122         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 123                 error |= le32_to_cpu(rxon->flags &
 124                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 125                                  RXON_FLG_RADAR_DETECT_MSK));
 126                 if (error)
 127                         IWL_WARNING("check 24G fields %d | %d\n",
 128                                     counter++, error);
 129         } else {
 130                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 131                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 132                 if (error)
 133                         IWL_WARNING("check 52 fields %d | %d\n",
 134                                     counter++, error);
 135                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 136                 if (error)
 137                         IWL_WARNING("check 52 CCK %d | %d\n",
 138                                     counter++, error);
 139         }
 140         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 141         if (error)
 142                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 143
 144         /* make sure basic rates 6Mbps and 1Mbps are supported */
 145         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 146                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 147         if (error)
 148                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 149
 150         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 151         if (error)
 152                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 153
 154         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 155                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 156         if (error)
 157                 IWL_WARNING("check CCK and short slot %d | %d\n",
 158                             counter++, error);
 159
 160         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 161                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 162         if (error)
 163                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 164                             counter++, error);
 165
 166         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 167                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 168         if (error)
 169                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 170                             counter++, error);
 171
 172         if (error)
 173                 IWL_WARNING("Tuning to channel %d\n",
 174                             le16_to_cpu(rxon->channel));
 175
 176         if (error) {
 177                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 178                 return -1;
 179         }
 180         return 0;
 181 }
 182
 183 /**
 184  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 185  * @priv: staging_rxon is compared to active_rxon
 186  *
 187  * If the RXON structure is changing enough to require a new tune,
 188  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 189  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 190  */
 191 static int iwl_full_rxon_required(struct iwl_priv *priv)
 192 {
 193
 194         /* These items are only settable from the full RXON command */
 195         if (!(iwl_is_associated(priv)) ||
 196             compare_ether_addr(priv->staging_rxon.bssid_addr,
 197                                priv->active_rxon.bssid_addr) ||
 198             compare_ether_addr(priv->staging_rxon.node_addr,
 199                                priv->active_rxon.node_addr) ||
 200             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 201                                priv->active_rxon.wlap_bssid_addr) ||
 202             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 203             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 204             (priv->staging_rxon.air_propagation !=
 205              priv->active_rxon.air_propagation) ||
 206             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 207              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 208             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 209              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 210             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 211                 return 1;
 212
 213         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 214          * be updated with the RXON_ASSOC command -- however only some
 215          * flag transitions are allowed using RXON_ASSOC */
 216
 217         /* Check if we are not switching bands */
 218         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 219             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 220                 return 1;
 221
 222         /* Check if we are switching association toggle */
 223         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 224                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 225                 return 1;
 226
 227         return 0;
 228 }
 229
 230 /**
 231  * iwl4965_commit_rxon - commit staging_rxon to hardware
 232  *
 233  * The RXON command in staging_rxon is committed to the hardware and
 234  * the active_rxon structure is updated with the new data.  This
 235  * function correctly transitions out of the RXON_ASSOC_MSK state if
 236  * a HW tune is required based on the RXON structure changes.
 237  */
 238 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 239 {
 240         /* cast away the const for active_rxon in this function */
 241         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 242         int ret;
 243         bool new_assoc =
 244                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 245
 246         if (!iwl_is_alive(priv))
 247                 return -EBUSY;
 248
 249         /* always get timestamp with Rx frame */
 250         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 251         /* allow CTS-to-self if possible. this is relevant only for
 252          * 5000, but will not damage 4965 */
 253         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 254
 255         ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 256         if (ret) {
 257                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 258                 return -EINVAL;
 259         }
 260
 261         /* If we don't need to send a full RXON, we can use
 262          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 263          * and other flags for the current radio configuration. */
 264         if (!iwl_full_rxon_required(priv)) {
 265                 ret = iwl_send_rxon_assoc(priv);
 266                 if (ret) {
 267                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 268                         return ret;
 269                 }
 270
 271                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 272                 return 0;
 273         }
 274
 275         /* station table will be cleared */
 276         priv->assoc_station_added = 0;
 277
 278         /* If we are currently associated and the new config requires
 279          * an RXON_ASSOC and the new config wants the associated mask enabled,
 280          * we must clear the associated from the active configuration
 281          * before we apply the new config */
 282         if (iwl_is_associated(priv) && new_assoc) {
 283                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 284                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 285
 286                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 287                                       sizeof(struct iwl_rxon_cmd),
 288                                       &priv->active_rxon);
 289
 290                 /* If the mask clearing failed then we set
 291                  * active_rxon back to what it was previously */
 292                 if (ret) {
 293                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 294                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 295                         return ret;
 296                 }
 297         }
 298
 299         IWL_DEBUG_INFO("Sending RXON\n"
 300                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 301                        "* channel = %d\n"
 302                        "* bssid = %pM\n",
 303                        (new_assoc ? "" : "out"),
 304                        le16_to_cpu(priv->staging_rxon.channel),
 305                        priv->staging_rxon.bssid_addr);
 306
 307         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 308
 309         /* Apply the new configuration
 310          * RXON unassoc clears the station table in uCode, send it before
 311          * we add the bcast station. If assoc bit is set, we will send RXON
 312          * after having added the bcast and bssid station.
 313          */
 314         if (!new_assoc) {
 315                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 316                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 317                 if (ret) {
 318                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 319                         return ret;
 320                 }
 321                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 322         }
 323
 324         iwl_clear_stations_table(priv);
 325
 326         if (!priv->error_recovering)
 327                 priv->start_calib = 0;
 328
 329         /* Add the broadcast address so we can send broadcast frames */
 330         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 331                                                 IWL_INVALID_STATION) {
 332                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 333                 return -EIO;
 334         }
 335
 336         /* If we have set the ASSOC_MSK and we are in BSS mode then
 337          * add the IWL_AP_ID to the station rate table */
 338         if (new_assoc) {
 339                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 340                         ret = iwl_rxon_add_station(priv,
 341                                            priv->active_rxon.bssid_addr, 1);
 342                         if (ret == IWL_INVALID_STATION) {
 343                                 IWL_ERROR("Error adding AP address for TX.\n");
 344                                 return -EIO;
 345                         }
 346                         priv->assoc_station_added = 1;
 347                         if (priv->default_wep_key &&
 348                             iwl_send_static_wepkey_cmd(priv, 0))
 349                                 IWL_ERROR("Could not send WEP static key.\n");
 350                 }
 351
 352                 /* Apply the new configuration
 353                  * RXON assoc doesn't clear the station table in uCode,
 354                  */
 355                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 356                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 357                 if (ret) {
 358                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 359                         return ret;
 360                 }
 361                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 362         }
 363
 364         iwl_init_sensitivity(priv);
 365
 366         /* If we issue a new RXON command which required a tune then we must
 367          * send a new TXPOWER command or we won't be able to Tx any frames */
 368         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 369         if (ret) {
 370                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 371                 return ret;
 372         }
 373
 374         return 0;
 375 }
 376
 377 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 378 {
 379
 380         iwl_set_rxon_chain(priv);
 381         iwl4965_commit_rxon(priv);
 382 }
 383
 384 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 385 {
 386         struct iwl4965_bt_cmd bt_cmd = {
 387                 .flags = 3,
 388                 .lead_time = 0xAA,
 389                 .max_kill = 1,
 390                 .kill_ack_mask = 0,
 391                 .kill_cts_mask = 0,
 392         };
 393
 394         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 395                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 396 }
 397
 398 static void iwl_clear_free_frames(struct iwl_priv *priv)
 399 {
 400         struct list_head *element;
 401
 402         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 403                        priv->frames_count);
 404
 405         while (!list_empty(&priv->free_frames)) {
 406                 element = priv->free_frames.next;
 407                 list_del(element);
 408                 kfree(list_entry(element, struct iwl_frame, list));
 409                 priv->frames_count--;
 410         }
 411
 412         if (priv->frames_count) {
 413                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 414                             priv->frames_count);
 415                 priv->frames_count = 0;
 416         }
 417 }
 418
 419 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 420 {
 421         struct iwl_frame *frame;
 422         struct list_head *element;
 423         if (list_empty(&priv->free_frames)) {
 424                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 425                 if (!frame) {
 426                         IWL_ERROR("Could not allocate frame!\n");
 427                         return NULL;
 428                 }
 429
 430                 priv->frames_count++;
 431                 return frame;
 432         }
 433
 434         element = priv->free_frames.next;
 435         list_del(element);
 436         return list_entry(element, struct iwl_frame, list);
 437 }
 438
 439 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 440 {
 441         memset(frame, 0, sizeof(*frame));
 442         list_add(&frame->list, &priv->free_frames);
 443 }
 444
 445 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 446                                           struct ieee80211_hdr *hdr,
 447                                           const u8 *dest, int left)
 448 {
 449         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 450             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 451              (priv->iw_mode != NL80211_IFTYPE_AP)))
 452                 return 0;
 453
 454         if (priv->ibss_beacon->len > left)
 455                 return 0;
 456
 457         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 458
 459         return priv->ibss_beacon->len;
 460 }
 461
 462 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 463 {
 464         int i;
 465         int rate_mask;
 466
 467         /* Set rate mask*/
 468         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 469                 rate_mask = priv->active_rate_basic & 0xF;
 470         else
 471                 rate_mask = priv->active_rate_basic & 0xFF0;
 472
 473         /* Find lowest valid rate */
 474         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 475                                         i = iwl_rates[i].next_ieee) {
 476                 if (rate_mask & (1 << i))
 477                         return iwl_rates[i].plcp;
 478         }
 479
 480         /* No valid rate was found. Assign the lowest one */
 481         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 482                 return IWL_RATE_1M_PLCP;
 483         else
 484                 return IWL_RATE_6M_PLCP;
 485 }
 486
 487 static unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
 488                                        struct iwl_frame *frame, u8 rate)
 489 {
 490         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 491         unsigned int frame_size;
 492
 493         tx_beacon_cmd = &frame->u.beacon;
 494         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 495
 496         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 497         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 498
 499         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 500                                 iwl_bcast_addr,
 501                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 502
 503         BUG_ON(frame_size > MAX_MPDU_SIZE);
 504         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 505
 506         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 507                 tx_beacon_cmd->tx.rate_n_flags =
 508                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 509         else
 510                 tx_beacon_cmd->tx.rate_n_flags =
 511                         iwl_hw_set_rate_n_flags(rate, 0);
 512
 513         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 514                                      TX_CMD_FLG_TSF_MSK |
 515                                      TX_CMD_FLG_STA_RATE_MSK;
 516
 517         return sizeof(*tx_beacon_cmd) + frame_size;
 518 }
 519 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 520 {
 521         struct iwl_frame *frame;
 522         unsigned int frame_size;
 523         int rc;
 524         u8 rate;
 525
 526         frame = iwl_get_free_frame(priv);
 527
 528         if (!frame) {
 529                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 530                           "command.\n");
 531                 return -ENOMEM;
 532         }
 533
 534         rate = iwl4965_rate_get_lowest_plcp(priv);
 535
 536         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 537
 538         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 539                               &frame->u.cmd[0]);
 540
 541         iwl_free_frame(priv, frame);
 542
 543         return rc;
 544 }
 545
 546 /******************************************************************************
 547  *
 548  * Misc. internal state and helper functions
 549  *
 550  ******************************************************************************/
 551
 552 static void iwl4965_ht_conf(struct iwl_priv *priv,
 553                             struct ieee80211_bss_conf *bss_conf)
 554 {
 555         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 556         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 557         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 558
 559         IWL_DEBUG_MAC80211("enter: \n");
 560
 561         iwl_conf->is_ht = bss_conf->assoc_ht;
 562
 563         if (!iwl_conf->is_ht)
 564                 return;
 565
 566         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 567                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 568         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 569                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 570
 571         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 572         iwl_conf->max_amsdu_size =
 573                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 574
 575         iwl_conf->supported_chan_width =
 576                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 577         iwl_conf->extension_chan_offset =
 578                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 579         /* If no above or below channel supplied disable FAT channel */
 580         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 581             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 582                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 583                 iwl_conf->supported_chan_width = 0;
 584         }
 585
 586         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 587
 588         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 589
 590         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 591         iwl_conf->tx_chan_width =
 592                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 593         iwl_conf->ht_protection =
 594                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 595         iwl_conf->non_GF_STA_present =
 596                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 597
 598         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 599         IWL_DEBUG_MAC80211("leave\n");
 600 }
 601
 602 /*
 603  * QoS  support
 604 */
 605 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 606 {
 607         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 608                 return;
 609
 610         if (!priv->qos_data.qos_enable)
 611                 return;
 612
 613         priv->qos_data.def_qos_parm.qos_flags = 0;
 614
 615         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 616             !priv->qos_data.qos_cap.q_AP.txop_request)
 617                 priv->qos_data.def_qos_parm.qos_flags |=
 618                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 619         if (priv->qos_data.qos_active)
 620                 priv->qos_data.def_qos_parm.qos_flags |=
 621                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 622
 623         if (priv->current_ht_config.is_ht)
 624                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 625
 626         if (force || iwl_is_associated(priv)) {
 627                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 628                                 priv->qos_data.qos_active,
 629                                 priv->qos_data.def_qos_parm.qos_flags);
 630
 631                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 632                                        sizeof(struct iwl_qosparam_cmd),
 633                                        &priv->qos_data.def_qos_parm, NULL);
 634         }
 635 }
 636
 637 #define MAX_UCODE_BEACON_INTERVAL       4096
 638
 639 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 640 {
 641         u16 new_val = 0;
 642         u16 beacon_factor = 0;
 643
 644         beacon_factor =
 645             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 646                 / MAX_UCODE_BEACON_INTERVAL;
 647         new_val = beacon_val / beacon_factor;
 648
 649         return cpu_to_le16(new_val);
 650 }
 651
 652 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 653 {
 654         u64 interval_tm_unit;
 655         u64 tsf, result;
 656         unsigned long flags;
 657         struct ieee80211_conf *conf = NULL;
 658         u16 beacon_int = 0;
 659
 660         conf = ieee80211_get_hw_conf(priv->hw);
 661
 662         spin_lock_irqsave(&priv->lock, flags);
 663         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 664         priv->rxon_timing.timestamp.dw[0] =
 665                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 666
 667         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 668
 669         tsf = priv->timestamp;
 670
 671         beacon_int = priv->beacon_int;
 672         spin_unlock_irqrestore(&priv->lock, flags);
 673
 674         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 675                 if (beacon_int == 0) {
 676                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 677                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 678                 } else {
 679                         priv->rxon_timing.beacon_interval =
 680                                 cpu_to_le16(beacon_int);
 681                         priv->rxon_timing.beacon_interval =
 682                             iwl4965_adjust_beacon_interval(
 683                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 684                 }
 685
 686                 priv->rxon_timing.atim_window = 0;
 687         } else {
 688                 priv->rxon_timing.beacon_interval =
 689                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 690                 /* TODO: we need to get atim_window from upper stack
 691                  * for now we set to 0 */
 692                 priv->rxon_timing.atim_window = 0;
 693         }
 694
 695         interval_tm_unit =
 696                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 697         result = do_div(tsf, interval_tm_unit);
 698         priv->rxon_timing.beacon_init_val =
 699             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 700
 701         IWL_DEBUG_ASSOC
 702             ("beacon interval %d beacon timer %d beacon tim %d\n",
 703                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 704                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 705                 le16_to_cpu(priv->rxon_timing.atim_window));
 706 }
 707
 708 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 709                                    enum ieee80211_band band)
 710 {
 711         if (band == IEEE80211_BAND_5GHZ) {
 712                 priv->staging_rxon.flags &=
 713                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 714                       | RXON_FLG_CCK_MSK);
 715                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 716         } else {
 717                 /* Copied from iwl4965_post_associate() */
 718                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 719                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 720                 else
 721                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 722
 723                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 724                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 725
 726                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 727                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 728                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 729         }
 730 }
 731
 732 /*
 733  * initialize rxon structure with default values from eeprom
 734  */
 735 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 736 {
 737         const struct iwl_channel_info *ch_info;
 738
 739         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 740
 741         switch (priv->iw_mode) {
 742         case NL80211_IFTYPE_AP:
 743                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 744                 break;
 745
 746         case NL80211_IFTYPE_STATION:
 747                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 748                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 749                 break;
 750
 751         case NL80211_IFTYPE_ADHOC:
 752                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 753                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 754                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 755                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 756                 break;
 757
 758         case NL80211_IFTYPE_MONITOR:
 759                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 760                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 761                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 762                 break;
 763         default:
 764                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 765                 break;
 766         }
 767
 768 #if 0
 769         /* TODO:  Figure out when short_preamble would be set and cache from
 770          * that */
 771         if (!hw_to_local(priv->hw)->short_preamble)
 772                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 773         else
 774                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 775 #endif
 776
 777         ch_info = iwl_get_channel_info(priv, priv->band,
 778                                        le16_to_cpu(priv->active_rxon.channel));
 779
 780         if (!ch_info)
 781                 ch_info = &priv->channel_info[0];
 782
 783         /*
 784          * in some case A channels are all non IBSS
 785          * in this case force B/G channel
 786          */
 787         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 788             !(is_channel_ibss(ch_info)))
 789                 ch_info = &priv->channel_info[0];
 790
 791         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 792         priv->band = ch_info->band;
 793
 794         iwl_set_flags_for_band(priv, priv->band);
 795
 796         priv->staging_rxon.ofdm_basic_rates =
 797             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 798         priv->staging_rxon.cck_basic_rates =
 799             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 800
 801         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 802                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 803         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 804         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 805         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 806         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 807         iwl_set_rxon_chain(priv);
 808 }
 809
 810 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 811 {
 812         priv->iw_mode = mode;
 813
 814         iwl4965_connection_init_rx_config(priv);
 815         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 816
 817         iwl_clear_stations_table(priv);
 818
 819         /* dont commit rxon if rf-kill is on*/
 820         if (!iwl_is_ready_rf(priv))
 821                 return -EAGAIN;
 822
 823         cancel_delayed_work(&priv->scan_check);
 824         if (iwl_scan_cancel_timeout(priv, 100)) {
 825                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 826                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 827                 return -EAGAIN;
 828         }
 829
 830         iwl4965_commit_rxon(priv);
 831
 832         return 0;
 833 }
 834
 835 static void iwl4965_set_rate(struct iwl_priv *priv)
 836 {
 837         const struct ieee80211_supported_band *hw = NULL;
 838         struct ieee80211_rate *rate;
 839         int i;
 840
 841         hw = iwl_get_hw_mode(priv, priv->band);
 842         if (!hw) {
 843                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 844                 return;
 845         }
 846
 847         priv->active_rate = 0;
 848         priv->active_rate_basic = 0;
 849
 850         for (i = 0; i < hw->n_bitrates; i++) {
 851                 rate = &(hw->bitrates[i]);
 852                 if (rate->hw_value < IWL_RATE_COUNT)
 853                         priv->active_rate |= (1 << rate->hw_value);
 854         }
 855
 856         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 857                        priv->active_rate, priv->active_rate_basic);
 858
 859         /*
 860          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 861          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 862          * OFDM
 863          */
 864         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 865                 priv->staging_rxon.cck_basic_rates =
 866                     ((priv->active_rate_basic &
 867                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 868         else
 869                 priv->staging_rxon.cck_basic_rates =
 870                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 871
 872         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 873                 priv->staging_rxon.ofdm_basic_rates =
 874                     ((priv->active_rate_basic &
 875                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 876                       IWL_FIRST_OFDM_RATE) & 0xFF;
 877         else
 878                 priv->staging_rxon.ofdm_basic_rates =
 879                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 880 }
 881
 882 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
 883
 884 #include "iwl-spectrum.h"
 885
 886 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 887 #define BEACON_TIME_MASK_HIGH   0xFF000000
 888 #define TIME_UNIT               1024
 889
 890 /*
 891  * extended beacon time format
 892  * time in usec will be changed into a 32-bit value in 8:24 format
 893  * the high 1 byte is the beacon counts
 894  * the lower 3 bytes is the time in usec within one beacon interval
 895  */
 896
 897 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 898 {
 899         u32 quot;
 900         u32 rem;
 901         u32 interval = beacon_interval * 1024;
 902
 903         if (!interval || !usec)
 904                 return 0;
 905
 906         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 907         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 908
 909         return (quot << 24) + rem;
 910 }
 911
 912 /* base is usually what we get from ucode with each received frame,
 913  * the same as HW timer counter counting down
 914  */
 915
 916 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 917 {
 918         u32 base_low = base & BEACON_TIME_MASK_LOW;
 919         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 920         u32 interval = beacon_interval * TIME_UNIT;
 921         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 922             (addon & BEACON_TIME_MASK_HIGH);
 923
 924         if (base_low > addon_low)
 925                 res += base_low - addon_low;
 926         else if (base_low < addon_low) {
 927                 res += interval + base_low - addon_low;
 928                 res += (1 << 24);
 929         } else
 930                 res += (1 << 24);
 931
 932         return cpu_to_le32(res);
 933 }
 934
 935 static int iwl4965_get_measurement(struct iwl_priv *priv,
 936                                struct ieee80211_measurement_params *params,
 937                                u8 type)
 938 {
 939         struct iwl4965_spectrum_cmd spectrum;
 940         struct iwl_rx_packet *res;
 941         struct iwl_host_cmd cmd = {
 942                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 943                 .data = (void *)&spectrum,
 944                 .meta.flags = CMD_WANT_SKB,
 945         };
 946         u32 add_time = le64_to_cpu(params->start_time);
 947         int rc;
 948         int spectrum_resp_status;
 949         int duration = le16_to_cpu(params->duration);
 950
 951         if (iwl_is_associated(priv))
 952                 add_time =
 953                     iwl4965_usecs_to_beacons(
 954                         le64_to_cpu(params->start_time) - priv->last_tsf,
 955                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 956
 957         memset(&spectrum, 0, sizeof(spectrum));
 958
 959         spectrum.channel_count = cpu_to_le16(1);
 960         spectrum.flags =
 961             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 962         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 963         cmd.len = sizeof(spectrum);
 964         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 965
 966         if (iwl_is_associated(priv))
 967                 spectrum.start_time =
 968                     iwl4965_add_beacon_time(priv->last_beacon_time,
 969                                 add_time,
 970                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 971         else
 972                 spectrum.start_time = 0;
 973
 974         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 975         spectrum.channels[0].channel = params->channel;
 976         spectrum.channels[0].type = type;
 977         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 978                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 979                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 980
 981         rc = iwl_send_cmd_sync(priv, &cmd);
 982         if (rc)
 983                 return rc;
 984
 985         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 986         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 987                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 988                 rc = -EIO;
 989         }
 990
 991         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 992         switch (spectrum_resp_status) {
 993         case 0:         /* Command will be handled */
 994                 if (res->u.spectrum.id != 0xff) {
 995                         IWL_DEBUG_INFO
 996                             ("Replaced existing measurement: %d\n",
 997                              res->u.spectrum.id);
 998                         priv->measurement_status &= ~MEASUREMENT_READY;
 999                 }
1000                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1001                 rc = 0;
1002                 break;
1003
1004         case 1:         /* Command will not be handled */
1005                 rc = -EAGAIN;
1006                 break;
1007         }
1008
1009         dev_kfree_skb_any(cmd.meta.u.skb);
1010
1011         return rc;
1012 }
1013 #endif
1014
1015 /******************************************************************************
1016  *
1017  * Generic RX handler implementations
1018  *
1019  ******************************************************************************/
1020 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1021                                 struct iwl_rx_mem_buffer *rxb)
1022 {
1023         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1024         struct iwl_alive_resp *palive;
1025         struct delayed_work *pwork;
1026
1027         palive = &pkt->u.alive_frame;
1028
1029         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1030                        "0x%01X 0x%01X\n",
1031                        palive->is_valid, palive->ver_type,
1032                        palive->ver_subtype);
1033
1034         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1035                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1036                 memcpy(&priv->card_alive_init,
1037                        &pkt->u.alive_frame,
1038                        sizeof(struct iwl_init_alive_resp));
1039                 pwork = &priv->init_alive_start;
1040         } else {
1041                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1042                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1043                        sizeof(struct iwl_alive_resp));
1044                 pwork = &priv->alive_start;
1045         }
1046
1047         /* We delay the ALIVE response by 5ms to
1048          * give the HW RF Kill time to activate... */
1049         if (palive->is_valid == UCODE_VALID_OK)
1050                 queue_delayed_work(priv->workqueue, pwork,
1051                                    msecs_to_jiffies(5));
1052         else
1053                 IWL_WARNING("uCode did not respond OK.\n");
1054 }
1055
1056 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1057                                    struct iwl_rx_mem_buffer *rxb)
1058 {
1059         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1060
1061         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1062                 "seq 0x%04X ser 0x%08X\n",
1063                 le32_to_cpu(pkt->u.err_resp.error_type),
1064                 get_cmd_string(pkt->u.err_resp.cmd_id),
1065                 pkt->u.err_resp.cmd_id,
1066                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1067                 le32_to_cpu(pkt->u.err_resp.error_info));
1068 }
1069
1070 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1071
1072 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1073 {
1074         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1075         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1076         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1077         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1078                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1079         rxon->channel = csa->channel;
1080         priv->staging_rxon.channel = csa->channel;
1081 }
1082
1083 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1084                                           struct iwl_rx_mem_buffer *rxb)
1085 {
1086 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1087         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1088         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1089
1090         if (!report->state) {
1091                 IWL_DEBUG(IWL_DL_11H,
1092                         "Spectrum Measure Notification: Start\n");
1093                 return;
1094         }
1095
1096         memcpy(&priv->measure_report, report, sizeof(*report));
1097         priv->measurement_status |= MEASUREMENT_READY;
1098 #endif
1099 }
1100
1101 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1102                                       struct iwl_rx_mem_buffer *rxb)
1103 {
1104 #ifdef CONFIG_IWLWIFI_DEBUG
1105         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1106         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1107         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1108                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1109 #endif
1110 }
1111
1112 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1113                                              struct iwl_rx_mem_buffer *rxb)
1114 {
1115         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1116         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1117                         "notification for %s:\n",
1118                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1119         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1120 }
1121
1122 static void iwl4965_bg_beacon_update(struct work_struct *work)
1123 {
1124         struct iwl_priv *priv =
1125                 container_of(work, struct iwl_priv, beacon_update);
1126         struct sk_buff *beacon;
1127
1128         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1129         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1130
1131         if (!beacon) {
1132                 IWL_ERROR("update beacon failed\n");
1133                 return;
1134         }
1135
1136         mutex_lock(&priv->mutex);
1137         /* new beacon skb is allocated every time; dispose previous.*/
1138         if (priv->ibss_beacon)
1139                 dev_kfree_skb(priv->ibss_beacon);
1140
1141         priv->ibss_beacon = beacon;
1142         mutex_unlock(&priv->mutex);
1143
1144         iwl4965_send_beacon_cmd(priv);
1145 }
1146
1147 /**
1148  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1149  *
1150  * This callback is provided in order to send a statistics request.
1151  *
1152  * This timer function is continually reset to execute within
1153  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1154  * was received.  We need to ensure we receive the statistics in order
1155  * to update the temperature used for calibrating the TXPOWER.
1156  */
1157 static void iwl4965_bg_statistics_periodic(unsigned long data)
1158 {
1159         struct iwl_priv *priv = (struct iwl_priv *)data;
1160
1161         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1162                 return;
1163
1164         iwl_send_statistics_request(priv, CMD_ASYNC);
1165 }
1166
1167 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1168                                 struct iwl_rx_mem_buffer *rxb)
1169 {
1170 #ifdef CONFIG_IWLWIFI_DEBUG
1171         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1172         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1173         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1174
1175         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1176                 "tsf %d %d rate %d\n",
1177                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1178                 beacon->beacon_notify_hdr.failure_frame,
1179                 le32_to_cpu(beacon->ibss_mgr_status),
1180                 le32_to_cpu(beacon->high_tsf),
1181                 le32_to_cpu(beacon->low_tsf), rate);
1182 #endif
1183
1184         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1185             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1186                 queue_work(priv->workqueue, &priv->beacon_update);
1187 }
1188
1189 /* Handle notification from uCode that card's power state is changing
1190  * due to software, hardware, or critical temperature RFKILL */
1191 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1192                                     struct iwl_rx_mem_buffer *rxb)
1193 {
1194         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1195         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1196         unsigned long status = priv->status;
1197
1198         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1199                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1200                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1201
1202         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1203                      RF_CARD_DISABLED)) {
1204
1205                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1206                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1207
1208                 if (!iwl_grab_nic_access(priv)) {
1209                         iwl_write_direct32(
1210                                 priv, HBUS_TARG_MBX_C,
1211                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1212
1213                         iwl_release_nic_access(priv);
1214                 }
1215
1216                 if (!(flags & RXON_CARD_DISABLED)) {
1217                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1218                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1219                         if (!iwl_grab_nic_access(priv)) {
1220                                 iwl_write_direct32(
1221                                         priv, HBUS_TARG_MBX_C,
1222                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1223
1224                                 iwl_release_nic_access(priv);
1225                         }
1226                 }
1227
1228                 if (flags & RF_CARD_DISABLED) {
1229                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1230                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1231                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1232                         if (!iwl_grab_nic_access(priv))
1233                                 iwl_release_nic_access(priv);
1234                 }
1235         }
1236
1237         if (flags & HW_CARD_DISABLED)
1238                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1239         else
1240                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1241
1242
1243         if (flags & SW_CARD_DISABLED)
1244                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1245         else
1246                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1247
1248         if (!(flags & RXON_CARD_DISABLED))
1249                 iwl_scan_cancel(priv);
1250
1251         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1252              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1253             (test_bit(STATUS_RF_KILL_SW, &status) !=
1254              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1255                 queue_work(priv->workqueue, &priv->rf_kill);
1256         else
1257                 wake_up_interruptible(&priv->wait_command_queue);
1258 }
1259
1260 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1261 {
1262         int ret;
1263         unsigned long flags;
1264
1265         spin_lock_irqsave(&priv->lock, flags);
1266         ret = iwl_grab_nic_access(priv);
1267         if (ret)
1268                 goto err;
1269
1270         if (src == IWL_PWR_SRC_VAUX) {
1271                 u32 val;
1272                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1273                                             &val);
1274
1275                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1276                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1277                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1278                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1279         } else {
1280                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1281                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1282                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1283         }
1284
1285         iwl_release_nic_access(priv);
1286 err:
1287         spin_unlock_irqrestore(&priv->lock, flags);
1288         return ret;
1289 }
1290
1291 /**
1292  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1293  *
1294  * Setup the RX handlers for each of the reply types sent from the uCode
1295  * to the host.
1296  *
1297  * This function chains into the hardware specific files for them to setup
1298  * any hardware specific handlers as well.
1299  */
1300 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1301 {
1302         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1303         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1304         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1305         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1306             iwl4965_rx_spectrum_measure_notif;
1307         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1308         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1309             iwl4965_rx_pm_debug_statistics_notif;
1310         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1311
1312         /*
1313          * The same handler is used for both the REPLY to a discrete
1314          * statistics request from the host as well as for the periodic
1315          * statistics notifications (after received beacons) from the uCode.
1316          */
1317         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1318         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1319
1320         iwl_setup_rx_scan_handlers(priv);
1321
1322         /* status change handler */
1323         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1324
1325         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1326             iwl_rx_missed_beacon_notif;
1327         /* Rx handlers */
1328         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1329         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1330         /* block ack */
1331         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1332         /* Set up hardware specific Rx handlers */
1333         priv->cfg->ops->lib->rx_handler_setup(priv);
1334 }
1335
1336 /*
1337  * this should be called while priv->lock is locked
1338 */
1339 static void __iwl_rx_replenish(struct iwl_priv *priv)
1340 {
1341         iwl_rx_allocate(priv);
1342         iwl_rx_queue_restock(priv);
1343 }
1344
1345
1346 /**
1347  * iwl_rx_handle - Main entry function for receiving responses from uCode
1348  *
1349  * Uses the priv->rx_handlers callback function array to invoke
1350  * the appropriate handlers, including command responses,
1351  * frame-received notifications, and other notifications.
1352  */
1353 void iwl_rx_handle(struct iwl_priv *priv)
1354 {
1355         struct iwl_rx_mem_buffer *rxb;
1356         struct iwl_rx_packet *pkt;
1357         struct iwl_rx_queue *rxq = &priv->rxq;
1358         u32 r, i;
1359         int reclaim;
1360         unsigned long flags;
1361         u8 fill_rx = 0;
1362         u32 count = 8;
1363
1364         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1365          * buffer that the driver may process (last buffer filled by ucode). */
1366         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1367         i = rxq->read;
1368
1369         /* Rx interrupt, but nothing sent from uCode */
1370         if (i == r)
1371                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1372
1373         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1374                 fill_rx = 1;
1375
1376         while (i != r) {
1377                 rxb = rxq->queue[i];
1378
1379                 /* If an RXB doesn't have a Rx queue slot associated with it,
1380                  * then a bug has been introduced in the queue refilling
1381                  * routines -- catch it here */
1382                 BUG_ON(rxb == NULL);
1383
1384                 rxq->queue[i] = NULL;
1385
1386                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1387                                             priv->hw_params.rx_buf_size,
1388                                             PCI_DMA_FROMDEVICE);
1389                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1390
1391                 /* Reclaim a command buffer only if this packet is a response
1392                  *   to a (driver-originated) command.
1393                  * If the packet (e.g. Rx frame) originated from uCode,
1394                  *   there is no command buffer to reclaim.
1395                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1396                  *   but apparently a few don't get set; catch them here. */
1397                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1398                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1399                         (pkt->hdr.cmd != REPLY_RX) &&
1400                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1401                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1402                         (pkt->hdr.cmd != REPLY_TX);
1403
1404                 /* Based on type of command response or notification,
1405                  *   handle those that need handling via function in
1406                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1407                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1408                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1409                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1410                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1411                 } else {
1412                         /* No handling needed */
1413                         IWL_DEBUG(IWL_DL_RX,
1414                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1415                                 r, i, get_cmd_string(pkt->hdr.cmd),
1416                                 pkt->hdr.cmd);
1417                 }
1418
1419                 if (reclaim) {
1420                         /* Invoke any callbacks, transfer the skb to caller, and
1421                          * fire off the (possibly) blocking iwl_send_cmd()
1422                          * as we reclaim the driver command queue */
1423                         if (rxb && rxb->skb)
1424                                 iwl_tx_cmd_complete(priv, rxb);
1425                         else
1426                                 IWL_WARNING("Claim null rxb?\n");
1427                 }
1428
1429                 /* For now we just don't re-use anything.  We can tweak this
1430                  * later to try and re-use notification packets and SKBs that
1431                  * fail to Rx correctly */
1432                 if (rxb->skb != NULL) {
1433                         priv->alloc_rxb_skb--;
1434                         dev_kfree_skb_any(rxb->skb);
1435                         rxb->skb = NULL;
1436                 }
1437
1438                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1439                                  priv->hw_params.rx_buf_size,
1440                                  PCI_DMA_FROMDEVICE);
1441                 spin_lock_irqsave(&rxq->lock, flags);
1442                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1443                 spin_unlock_irqrestore(&rxq->lock, flags);
1444                 i = (i + 1) & RX_QUEUE_MASK;
1445                 /* If there are a lot of unused frames,
1446                  * restock the Rx queue so ucode wont assert. */
1447                 if (fill_rx) {
1448                         count++;
1449                         if (count >= 8) {
1450                                 priv->rxq.read = i;
1451                                 __iwl_rx_replenish(priv);
1452                                 count = 0;
1453                         }
1454                 }
1455         }
1456
1457         /* Backtrack one entry */
1458         priv->rxq.read = i;
1459         iwl_rx_queue_restock(priv);
1460 }
1461
1462 #ifdef CONFIG_IWLWIFI_DEBUG
1463 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1464 {
1465         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1466
1467         IWL_DEBUG_RADIO("RX CONFIG:\n");
1468         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1469         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1470         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1471         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1472                         le32_to_cpu(rxon->filter_flags));
1473         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1474         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1475                         rxon->ofdm_basic_rates);
1476         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1477         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1478         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1479         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1480 }
1481 #endif
1482
1483 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1484 {
1485         IWL_DEBUG_ISR("Enabling interrupts\n");
1486         set_bit(STATUS_INT_ENABLED, &priv->status);
1487         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1488 }
1489
1490 /* call this function to flush any scheduled tasklet */
1491 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1492 {
1493         /* wait to make sure we flush pedding tasklet*/
1494         synchronize_irq(priv->pci_dev->irq);
1495         tasklet_kill(&priv->irq_tasklet);
1496 }
1497
1498 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1499 {
1500         clear_bit(STATUS_INT_ENABLED, &priv->status);
1501
1502         /* disable interrupts from uCode/NIC to host */
1503         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1504
1505         /* acknowledge/clear/reset any interrupts still pending
1506          * from uCode or flow handler (Rx/Tx DMA) */
1507         iwl_write32(priv, CSR_INT, 0xffffffff);
1508         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1509         IWL_DEBUG_ISR("Disabled interrupts\n");
1510 }
1511
1512
1513 /**
1514  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1515  */
1516 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1517 {
1518         /* Set the FW error flag -- cleared on iwl4965_down */
1519         set_bit(STATUS_FW_ERROR, &priv->status);
1520
1521         /* Cancel currently queued command. */
1522         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1523
1524 #ifdef CONFIG_IWLWIFI_DEBUG
1525         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1526                 iwl_dump_nic_error_log(priv);
1527                 iwl_dump_nic_event_log(priv);
1528                 iwl4965_print_rx_config_cmd(priv);
1529         }
1530 #endif
1531
1532         wake_up_interruptible(&priv->wait_command_queue);
1533
1534         /* Keep the restart process from trying to send host
1535          * commands by clearing the INIT status bit */
1536         clear_bit(STATUS_READY, &priv->status);
1537
1538         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1539                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1540                           "Restarting adapter due to uCode error.\n");
1541
1542                 if (iwl_is_associated(priv)) {
1543                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1544                                sizeof(priv->recovery_rxon));
1545                         priv->error_recovering = 1;
1546                 }
1547                 if (priv->cfg->mod_params->restart_fw)
1548                         queue_work(priv->workqueue, &priv->restart);
1549         }
1550 }
1551
1552 static void iwl4965_error_recovery(struct iwl_priv *priv)
1553 {
1554         unsigned long flags;
1555
1556         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1557                sizeof(priv->staging_rxon));
1558         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1559         iwl4965_commit_rxon(priv);
1560
1561         iwl_rxon_add_station(priv, priv->bssid, 1);
1562
1563         spin_lock_irqsave(&priv->lock, flags);
1564         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1565         priv->error_recovering = 0;
1566         spin_unlock_irqrestore(&priv->lock, flags);
1567 }
1568
1569 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1570 {
1571         u32 inta, handled = 0;
1572         u32 inta_fh;
1573         unsigned long flags;
1574 #ifdef CONFIG_IWLWIFI_DEBUG
1575         u32 inta_mask;
1576 #endif
1577
1578         spin_lock_irqsave(&priv->lock, flags);
1579
1580         /* Ack/clear/reset pending uCode interrupts.
1581          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1582          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1583         inta = iwl_read32(priv, CSR_INT);
1584         iwl_write32(priv, CSR_INT, inta);
1585
1586         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1587          * Any new interrupts that happen after this, either while we're
1588          * in this tasklet, or later, will show up in next ISR/tasklet. */
1589         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1590         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1591
1592 #ifdef CONFIG_IWLWIFI_DEBUG
1593         if (priv->debug_level & IWL_DL_ISR) {
1594                 /* just for debug */
1595                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1596                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1597                               inta, inta_mask, inta_fh);
1598         }
1599 #endif
1600
1601         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1602          * atomic, make sure that inta covers all the interrupts that
1603          * we've discovered, even if FH interrupt came in just after
1604          * reading CSR_INT. */
1605         if (inta_fh & CSR49_FH_INT_RX_MASK)
1606                 inta |= CSR_INT_BIT_FH_RX;
1607         if (inta_fh & CSR49_FH_INT_TX_MASK)
1608                 inta |= CSR_INT_BIT_FH_TX;
1609
1610         /* Now service all interrupt bits discovered above. */
1611         if (inta & CSR_INT_BIT_HW_ERR) {
1612                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1613
1614                 /* Tell the device to stop sending interrupts */
1615                 iwl4965_disable_interrupts(priv);
1616
1617                 iwl4965_irq_handle_error(priv);
1618
1619                 handled |= CSR_INT_BIT_HW_ERR;
1620
1621                 spin_unlock_irqrestore(&priv->lock, flags);
1622
1623                 return;
1624         }
1625
1626 #ifdef CONFIG_IWLWIFI_DEBUG
1627         if (priv->debug_level & (IWL_DL_ISR)) {
1628                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1629                 if (inta & CSR_INT_BIT_SCD)
1630                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1631                                       "the frame/frames.\n");
1632
1633                 /* Alive notification via Rx interrupt will do the real work */
1634                 if (inta & CSR_INT_BIT_ALIVE)
1635                         IWL_DEBUG_ISR("Alive interrupt\n");
1636         }
1637 #endif
1638         /* Safely ignore these bits for debug checks below */
1639         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1640
1641         /* HW RF KILL switch toggled */
1642         if (inta & CSR_INT_BIT_RF_KILL) {
1643                 int hw_rf_kill = 0;
1644                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1645                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1646                         hw_rf_kill = 1;
1647
1648                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1649                                 hw_rf_kill ? "disable radio":"enable radio");
1650
1651                 /* driver only loads ucode once setting the interface up.
1652                  * the driver as well won't allow loading if RFKILL is set
1653                  * therefore no need to restart the driver from this handler
1654                  */
1655                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1656                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1657
1658                 handled |= CSR_INT_BIT_RF_KILL;
1659         }
1660
1661         /* Chip got too hot and stopped itself */
1662         if (inta & CSR_INT_BIT_CT_KILL) {
1663                 IWL_ERROR("Microcode CT kill error detected.\n");
1664                 handled |= CSR_INT_BIT_CT_KILL;
1665         }
1666
1667         /* Error detected by uCode */
1668         if (inta & CSR_INT_BIT_SW_ERR) {
1669                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1670                           inta);
1671                 iwl4965_irq_handle_error(priv);
1672                 handled |= CSR_INT_BIT_SW_ERR;
1673         }
1674
1675         /* uCode wakes up after power-down sleep */
1676         if (inta & CSR_INT_BIT_WAKEUP) {
1677                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1678                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1679                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1680                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1681                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1682                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1683                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1684                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1685
1686                 handled |= CSR_INT_BIT_WAKEUP;
1687         }
1688
1689         /* All uCode command responses, including Tx command responses,
1690          * Rx "responses" (frame-received notification), and other
1691          * notifications from uCode come through here*/
1692         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1693                 iwl_rx_handle(priv);
1694                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1695         }
1696
1697         if (inta & CSR_INT_BIT_FH_TX) {
1698                 IWL_DEBUG_ISR("Tx interrupt\n");
1699                 handled |= CSR_INT_BIT_FH_TX;
1700                 /* FH finished to write, send event */
1701                 priv->ucode_write_complete = 1;
1702                 wake_up_interruptible(&priv->wait_command_queue);
1703         }
1704
1705         if (inta & ~handled)
1706                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1707
1708         if (inta & ~CSR_INI_SET_MASK) {
1709                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1710                          inta & ~CSR_INI_SET_MASK);
1711                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1712         }
1713
1714         /* Re-enable all interrupts */
1715         /* only Re-enable if diabled by irq */
1716         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1717                 iwl4965_enable_interrupts(priv);
1718
1719 #ifdef CONFIG_IWLWIFI_DEBUG
1720         if (priv->debug_level & (IWL_DL_ISR)) {
1721                 inta = iwl_read32(priv, CSR_INT);
1722                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1723                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1724                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1725                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1726         }
1727 #endif
1728         spin_unlock_irqrestore(&priv->lock, flags);
1729 }
1730
1731 static irqreturn_t iwl4965_isr(int irq, void *data)
1732 {
1733         struct iwl_priv *priv = data;
1734         u32 inta, inta_mask;
1735         u32 inta_fh;
1736         if (!priv)
1737                 return IRQ_NONE;
1738
1739         spin_lock(&priv->lock);
1740
1741         /* Disable (but don't clear!) interrupts here to avoid
1742          *    back-to-back ISRs and sporadic interrupts from our NIC.
1743          * If we have something to service, the tasklet will re-enable ints.
1744          * If we *don't* have something, we'll re-enable before leaving here. */
1745         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1746         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1747
1748         /* Discover which interrupts are active/pending */
1749         inta = iwl_read32(priv, CSR_INT);
1750         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1751
1752         /* Ignore interrupt if there's nothing in NIC to service.
1753          * This may be due to IRQ shared with another device,
1754          * or due to sporadic interrupts thrown from our NIC. */
1755         if (!inta && !inta_fh) {
1756                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1757                 goto none;
1758         }
1759
1760         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1761                 /* Hardware disappeared. It might have already raised
1762                  * an interrupt */
1763                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1764                 goto unplugged;
1765         }
1766
1767         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1768                       inta, inta_mask, inta_fh);
1769
1770         inta &= ~CSR_INT_BIT_SCD;
1771
1772         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1773         if (likely(inta || inta_fh))
1774                 tasklet_schedule(&priv->irq_tasklet);
1775
1776  unplugged:
1777         spin_unlock(&priv->lock);
1778         return IRQ_HANDLED;
1779
1780  none:
1781         /* re-enable interrupts here since we don't have anything to service. */
1782         /* only Re-enable if diabled by irq */
1783         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1784                 iwl4965_enable_interrupts(priv);
1785         spin_unlock(&priv->lock);
1786         return IRQ_NONE;
1787 }
1788
1789 /******************************************************************************
1790  *
1791  * uCode download functions
1792  *
1793  ******************************************************************************/
1794
1795 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1796 {
1797         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1798         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1799         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1800         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1801         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1802         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1803 }
1804
1805 static void iwl4965_nic_start(struct iwl_priv *priv)
1806 {
1807         /* Remove all resets to allow NIC to operate */
1808         iwl_write32(priv, CSR_RESET, 0);
1809 }
1810
1811
1812 /**
1813  * iwl4965_read_ucode - Read uCode images from disk file.
1814  *
1815  * Copy into buffers for card to fetch via bus-mastering
1816  */
1817 static int iwl4965_read_ucode(struct iwl_priv *priv)
1818 {
1819         struct iwl_ucode *ucode;
1820         int ret;
1821         const struct firmware *ucode_raw;
1822         const char *name = priv->cfg->fw_name;
1823         u8 *src;
1824         size_t len;
1825         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1826
1827         /* Ask kernel firmware_class module to get the boot firmware off disk.
1828          * request_firmware() is synchronous, file is in memory on return. */
1829         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1830         if (ret < 0) {
1831                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1832                                         name, ret);
1833                 goto error;
1834         }
1835
1836         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1837                        name, ucode_raw->size);
1838
1839         /* Make sure that we got at least our header! */
1840         if (ucode_raw->size < sizeof(*ucode)) {
1841                 IWL_ERROR("File size way too small!\n");
1842                 ret = -EINVAL;
1843                 goto err_release;
1844         }
1845
1846         /* Data from ucode file:  header followed by uCode images */
1847         ucode = (void *)ucode_raw->data;
1848
1849         ver = le32_to_cpu(ucode->ver);
1850         inst_size = le32_to_cpu(ucode->inst_size);
1851         data_size = le32_to_cpu(ucode->data_size);
1852         init_size = le32_to_cpu(ucode->init_size);
1853         init_data_size = le32_to_cpu(ucode->init_data_size);
1854         boot_size = le32_to_cpu(ucode->boot_size);
1855
1856         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1857         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1858                        inst_size);
1859         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1860                        data_size);
1861         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1862                        init_size);
1863         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1864                        init_data_size);
1865         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1866                        boot_size);
1867
1868         /* Verify size of file vs. image size info in file's header */
1869         if (ucode_raw->size < sizeof(*ucode) +
1870                 inst_size + data_size + init_size +
1871                 init_data_size + boot_size) {
1872
1873                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1874                                (int)ucode_raw->size);
1875                 ret = -EINVAL;
1876                 goto err_release;
1877         }
1878
1879         /* Verify that uCode images will fit in card's SRAM */
1880         if (inst_size > priv->hw_params.max_inst_size) {
1881                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1882                                inst_size);
1883                 ret = -EINVAL;
1884                 goto err_release;
1885         }
1886
1887         if (data_size > priv->hw_params.max_data_size) {
1888                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1889                                 data_size);
1890                 ret = -EINVAL;
1891                 goto err_release;
1892         }
1893         if (init_size > priv->hw_params.max_inst_size) {
1894                 IWL_DEBUG_INFO
1895                     ("uCode init instr len %d too large to fit in\n",
1896                       init_size);
1897                 ret = -EINVAL;
1898                 goto err_release;
1899         }
1900         if (init_data_size > priv->hw_params.max_data_size) {
1901                 IWL_DEBUG_INFO
1902                     ("uCode init data len %d too large to fit in\n",
1903                       init_data_size);
1904                 ret = -EINVAL;
1905                 goto err_release;
1906         }
1907         if (boot_size > priv->hw_params.max_bsm_size) {
1908                 IWL_DEBUG_INFO
1909                     ("uCode boot instr len %d too large to fit in\n",
1910                       boot_size);
1911                 ret = -EINVAL;
1912                 goto err_release;
1913         }
1914
1915         /* Allocate ucode buffers for card's bus-master loading ... */
1916
1917         /* Runtime instructions and 2 copies of data:
1918          * 1) unmodified from disk
1919          * 2) backup cache for save/restore during power-downs */
1920         priv->ucode_code.len = inst_size;
1921         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1922
1923         priv->ucode_data.len = data_size;
1924         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1925
1926         priv->ucode_data_backup.len = data_size;
1927         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1928
1929         /* Initialization instructions and data */
1930         if (init_size && init_data_size) {
1931                 priv->ucode_init.len = init_size;
1932                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1933
1934                 priv->ucode_init_data.len = init_data_size;
1935                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1936
1937                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1938                         goto err_pci_alloc;
1939         }
1940
1941         /* Bootstrap (instructions only, no data) */
1942         if (boot_size) {
1943                 priv->ucode_boot.len = boot_size;
1944                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1945
1946                 if (!priv->ucode_boot.v_addr)
1947                         goto err_pci_alloc;
1948         }
1949
1950         /* Copy images into buffers for card's bus-master reads ... */
1951
1952         /* Runtime instructions (first block of data in file) */
1953         src = &ucode->data[0];
1954         len = priv->ucode_code.len;
1955         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1956         memcpy(priv->ucode_code.v_addr, src, len);
1957         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1958                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1959
1960         /* Runtime data (2nd block)
1961          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1962         src = &ucode->data[inst_size];
1963         len = priv->ucode_data.len;
1964         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1965         memcpy(priv->ucode_data.v_addr, src, len);
1966         memcpy(priv->ucode_data_backup.v_addr, src, len);
1967
1968         /* Initialization instructions (3rd block) */
1969         if (init_size) {
1970                 src = &ucode->data[inst_size + data_size];
1971                 len = priv->ucode_init.len;
1972                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1973                                 len);
1974                 memcpy(priv->ucode_init.v_addr, src, len);
1975         }
1976
1977         /* Initialization data (4th block) */
1978         if (init_data_size) {
1979                 src = &ucode->data[inst_size + data_size + init_size];
1980                 len = priv->ucode_init_data.len;
1981                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1982                                len);
1983                 memcpy(priv->ucode_init_data.v_addr, src, len);
1984         }
1985
1986         /* Bootstrap instructions (5th block) */
1987         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1988         len = priv->ucode_boot.len;
1989         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1990         memcpy(priv->ucode_boot.v_addr, src, len);
1991
1992         /* We have our copies now, allow OS release its copies */
1993         release_firmware(ucode_raw);
1994         return 0;
1995
1996  err_pci_alloc:
1997         IWL_ERROR("failed to allocate pci memory\n");
1998         ret = -ENOMEM;
1999         iwl4965_dealloc_ucode_pci(priv);
2000
2001  err_release:
2002         release_firmware(ucode_raw);
2003
2004  error:
2005         return ret;
2006 }
2007
2008 /**
2009  * iwl_alive_start - called after REPLY_ALIVE notification received
2010  *                   from protocol/runtime uCode (initialization uCode's
2011  *                   Alive gets handled by iwl_init_alive_start()).
2012  */
2013 static void iwl_alive_start(struct iwl_priv *priv)
2014 {
2015         int ret = 0;
2016
2017         IWL_DEBUG_INFO("Runtime Alive received.\n");
2018
2019         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2020                 /* We had an error bringing up the hardware, so take it
2021                  * all the way back down so we can try again */
2022                 IWL_DEBUG_INFO("Alive failed.\n");
2023                 goto restart;
2024         }
2025
2026         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2027          * This is a paranoid check, because we would not have gotten the
2028          * "runtime" alive if code weren't properly loaded.  */
2029         if (iwl_verify_ucode(priv)) {
2030                 /* Runtime instruction load was bad;
2031                  * take it all the way back down so we can try again */
2032                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2033                 goto restart;
2034         }
2035
2036         iwl_clear_stations_table(priv);
2037         ret = priv->cfg->ops->lib->alive_notify(priv);
2038         if (ret) {
2039                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2040                             ret);
2041                 goto restart;
2042         }
2043
2044         /* After the ALIVE response, we can send host commands to 4965 uCode */
2045         set_bit(STATUS_ALIVE, &priv->status);
2046
2047         if (iwl_is_rfkill(priv))
2048                 return;
2049
2050         ieee80211_wake_queues(priv->hw);
2051
2052         priv->active_rate = priv->rates_mask;
2053         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2054
2055         if (iwl_is_associated(priv)) {
2056                 struct iwl_rxon_cmd *active_rxon =
2057                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2058
2059                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2060                        sizeof(priv->staging_rxon));
2061                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2062         } else {
2063                 /* Initialize our rx_config data */
2064                 iwl4965_connection_init_rx_config(priv);
2065                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2066         }
2067
2068         /* Configure Bluetooth device coexistence support */
2069         iwl4965_send_bt_config(priv);
2070
2071         iwl_reset_run_time_calib(priv);
2072
2073         /* Configure the adapter for unassociated operation */
2074         iwl4965_commit_rxon(priv);
2075
2076         /* At this point, the NIC is initialized and operational */
2077         iwl_rf_kill_ct_config(priv);
2078
2079         iwl_leds_register(priv);
2080
2081         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2082         set_bit(STATUS_READY, &priv->status);
2083         wake_up_interruptible(&priv->wait_command_queue);
2084
2085         if (priv->error_recovering)
2086                 iwl4965_error_recovery(priv);
2087
2088         iwl_power_update_mode(priv, 1);
2089
2090         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2091                 iwl4965_set_mode(priv, priv->iw_mode);
2092
2093         return;
2094
2095  restart:
2096         queue_work(priv->workqueue, &priv->restart);
2097 }
2098
2099 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2100
2101 static void __iwl4965_down(struct iwl_priv *priv)
2102 {
2103         unsigned long flags;
2104         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2105
2106         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2107
2108         if (!exit_pending)
2109                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2110
2111         iwl_leds_unregister(priv);
2112
2113         iwl_clear_stations_table(priv);
2114
2115         /* Unblock any waiting calls */
2116         wake_up_interruptible_all(&priv->wait_command_queue);
2117
2118         /* Wipe out the EXIT_PENDING status bit if we are not actually
2119          * exiting the module */
2120         if (!exit_pending)
2121                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2122
2123         /* stop and reset the on-board processor */
2124         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2125
2126         /* tell the device to stop sending interrupts */
2127         spin_lock_irqsave(&priv->lock, flags);
2128         iwl4965_disable_interrupts(priv);
2129         spin_unlock_irqrestore(&priv->lock, flags);
2130         iwl_synchronize_irq(priv);
2131
2132         if (priv->mac80211_registered)
2133                 ieee80211_stop_queues(priv->hw);
2134
2135         /* If we have not previously called iwl4965_init() then
2136          * clear all bits but the RF Kill and SUSPEND bits and return */
2137         if (!iwl_is_init(priv)) {
2138                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2139                                         STATUS_RF_KILL_HW |
2140                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2141                                         STATUS_RF_KILL_SW |
2142                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2143                                         STATUS_GEO_CONFIGURED |
2144                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2145                                         STATUS_IN_SUSPEND |
2146                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2147                                         STATUS_EXIT_PENDING;
2148                 goto exit;
2149         }
2150
2151         /* ...otherwise clear out all the status bits but the RF Kill and
2152          * SUSPEND bits and continue taking the NIC down. */
2153         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2154                                 STATUS_RF_KILL_HW |
2155                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2156                                 STATUS_RF_KILL_SW |
2157                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2158                                 STATUS_GEO_CONFIGURED |
2159                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2160                                 STATUS_IN_SUSPEND |
2161                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2162                                 STATUS_FW_ERROR |
2163                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2164                                 STATUS_EXIT_PENDING;
2165
2166         spin_lock_irqsave(&priv->lock, flags);
2167         iwl_clear_bit(priv, CSR_GP_CNTRL,
2168                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2169         spin_unlock_irqrestore(&priv->lock, flags);
2170
2171         iwl_txq_ctx_stop(priv);
2172         iwl_rxq_stop(priv);
2173
2174         spin_lock_irqsave(&priv->lock, flags);
2175         if (!iwl_grab_nic_access(priv)) {
2176                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2177                                          APMG_CLK_VAL_DMA_CLK_RQT);
2178                 iwl_release_nic_access(priv);
2179         }
2180         spin_unlock_irqrestore(&priv->lock, flags);
2181
2182         udelay(5);
2183
2184         /* FIXME: apm_ops.suspend(priv) */
2185         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2186                 priv->cfg->ops->lib->apm_ops.stop(priv);
2187         else
2188                 priv->cfg->ops->lib->apm_ops.reset(priv);
2189         priv->cfg->ops->lib->free_shared_mem(priv);
2190
2191  exit:
2192         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2193
2194         if (priv->ibss_beacon)
2195                 dev_kfree_skb(priv->ibss_beacon);
2196         priv->ibss_beacon = NULL;
2197
2198         /* clear out any free frames */
2199         iwl_clear_free_frames(priv);
2200 }
2201
2202 static void iwl4965_down(struct iwl_priv *priv)
2203 {
2204         mutex_lock(&priv->mutex);
2205         __iwl4965_down(priv);
2206         mutex_unlock(&priv->mutex);
2207
2208         iwl_cancel_deferred_work(priv);
2209 }
2210
2211 #define MAX_HW_RESTARTS 5
2212
2213 static int __iwl4965_up(struct iwl_priv *priv)
2214 {
2215         int i;
2216         int ret;
2217
2218         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2219                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2220                 return -EIO;
2221         }
2222
2223         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2224                 IWL_ERROR("ucode not available for device bringup\n");
2225                 return -EIO;
2226         }
2227
2228         /* If platform's RF_KILL switch is NOT set to KILL */
2229         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2230                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2231         else
2232                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2233
2234         if (iwl_is_rfkill(priv)) {
2235                 iwl4965_enable_interrupts(priv);
2236                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2237                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2238                 return 0;
2239         }
2240
2241         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2242
2243         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2244         if (ret) {
2245                 IWL_ERROR("Unable to allocate shared memory\n");
2246                 return ret;
2247         }
2248
2249         ret = iwl_hw_nic_init(priv);
2250         if (ret) {
2251                 IWL_ERROR("Unable to init nic\n");
2252                 return ret;
2253         }
2254
2255         /* make sure rfkill handshake bits are cleared */
2256         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2257         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2258                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2259
2260         /* clear (again), then enable host interrupts */
2261         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2262         iwl4965_enable_interrupts(priv);
2263
2264         /* really make sure rfkill handshake bits are cleared */
2265         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2266         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2267
2268         /* Copy original ucode data image from disk into backup cache.
2269          * This will be used to initialize the on-board processor's
2270          * data SRAM for a clean start when the runtime program first loads. */
2271         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2272                priv->ucode_data.len);
2273
2274         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2275
2276                 iwl_clear_stations_table(priv);
2277
2278                 /* load bootstrap state machine,
2279                  * load bootstrap program into processor's memory,
2280                  * prepare to load the "initialize" uCode */
2281                 ret = priv->cfg->ops->lib->load_ucode(priv);
2282
2283                 if (ret) {
2284                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2285                         continue;
2286                 }
2287
2288                 /* Clear out the uCode error bit if it is set */
2289                 clear_bit(STATUS_FW_ERROR, &priv->status);
2290
2291                 /* start card; "initialize" will load runtime ucode */
2292                 iwl4965_nic_start(priv);
2293
2294                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2295
2296                 return 0;
2297         }
2298
2299         set_bit(STATUS_EXIT_PENDING, &priv->status);
2300         __iwl4965_down(priv);
2301         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2302
2303         /* tried to restart and config the device for as long as our
2304          * patience could withstand */
2305         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2306         return -EIO;
2307 }
2308
2309
2310 /*****************************************************************************
2311  *
2312  * Workqueue callbacks
2313  *
2314  *****************************************************************************/
2315
2316 static void iwl_bg_init_alive_start(struct work_struct *data)
2317 {
2318         struct iwl_priv *priv =
2319             container_of(data, struct iwl_priv, init_alive_start.work);
2320
2321         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2322                 return;
2323
2324         mutex_lock(&priv->mutex);
2325         priv->cfg->ops->lib->init_alive_start(priv);
2326         mutex_unlock(&priv->mutex);
2327 }
2328
2329 static void iwl_bg_alive_start(struct work_struct *data)
2330 {
2331         struct iwl_priv *priv =
2332             container_of(data, struct iwl_priv, alive_start.work);
2333
2334         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2335                 return;
2336
2337         mutex_lock(&priv->mutex);
2338         iwl_alive_start(priv);
2339         mutex_unlock(&priv->mutex);
2340         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2341 }
2342
2343 static void iwl4965_bg_rf_kill(struct work_struct *work)
2344 {
2345         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2346
2347         wake_up_interruptible(&priv->wait_command_queue);
2348
2349         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2350                 return;
2351
2352         mutex_lock(&priv->mutex);
2353
2354         if (!iwl_is_rfkill(priv)) {
2355                 IWL_DEBUG(IWL_DL_RF_KILL,
2356                           "HW and/or SW RF Kill no longer active, restarting "
2357                           "device\n");
2358                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2359                         queue_work(priv->workqueue, &priv->restart);
2360         } else {
2361                 /* make sure mac80211 stop sending Tx frame */
2362                 if (priv->mac80211_registered)
2363                         ieee80211_stop_queues(priv->hw);
2364
2365                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2366                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2367                                           "disabled by SW switch\n");
2368                 else
2369                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2370                                     "Kill switch must be turned off for "
2371                                     "wireless networking to work.\n");
2372         }
2373         mutex_unlock(&priv->mutex);
2374         iwl_rfkill_set_hw_state(priv);
2375 }
2376
2377 static void iwl4965_bg_set_monitor(struct work_struct *work)
2378 {
2379         struct iwl_priv *priv = container_of(work,
2380                                 struct iwl_priv, set_monitor);
2381         int ret;
2382
2383         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2384
2385         mutex_lock(&priv->mutex);
2386
2387         ret = iwl4965_set_mode(priv, NL80211_IFTYPE_MONITOR);
2388
2389         if (ret) {
2390                 if (ret == -EAGAIN)
2391                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2392                 else
2393                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2394         }
2395
2396         mutex_unlock(&priv->mutex);
2397 }
2398
2399 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2400 {
2401         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2402                         run_time_calib_work);
2403
2404         mutex_lock(&priv->mutex);
2405
2406         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2407             test_bit(STATUS_SCANNING, &priv->status)) {
2408                 mutex_unlock(&priv->mutex);
2409                 return;
2410         }
2411
2412         if (priv->start_calib) {
2413                 iwl_chain_noise_calibration(priv, &priv->statistics);
2414
2415                 iwl_sensitivity_calibration(priv, &priv->statistics);
2416         }
2417
2418         mutex_unlock(&priv->mutex);
2419         return;
2420 }
2421
2422 static void iwl4965_bg_up(struct work_struct *data)
2423 {
2424         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2425
2426         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2427                 return;
2428
2429         mutex_lock(&priv->mutex);
2430         __iwl4965_up(priv);
2431         mutex_unlock(&priv->mutex);
2432         iwl_rfkill_set_hw_state(priv);
2433 }
2434
2435 static void iwl4965_bg_restart(struct work_struct *data)
2436 {
2437         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2438
2439         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2440                 return;
2441
2442         iwl4965_down(priv);
2443         queue_work(priv->workqueue, &priv->up);
2444 }
2445
2446 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2447 {
2448         struct iwl_priv *priv =
2449             container_of(data, struct iwl_priv, rx_replenish);
2450
2451         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2452                 return;
2453
2454         mutex_lock(&priv->mutex);
2455         iwl_rx_replenish(priv);
2456         mutex_unlock(&priv->mutex);
2457 }
2458
2459 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2460
2461 static void iwl4965_post_associate(struct iwl_priv *priv)
2462 {
2463         struct ieee80211_conf *conf = NULL;
2464         int ret = 0;
2465         unsigned long flags;
2466
2467         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2468                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2469                 return;
2470         }
2471
2472         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2473                         priv->assoc_id, priv->active_rxon.bssid_addr);
2474
2475
2476         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2477                 return;
2478
2479
2480         if (!priv->vif || !priv->is_open)
2481                 return;
2482
2483         iwl_power_cancel_timeout(priv);
2484         iwl_scan_cancel_timeout(priv, 200);
2485
2486         conf = ieee80211_get_hw_conf(priv->hw);
2487
2488         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2489         iwl4965_commit_rxon(priv);
2490
2491         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2492         iwl4965_setup_rxon_timing(priv);
2493         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2494                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2495         if (ret)
2496                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2497                             "Attempting to continue.\n");
2498
2499         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2500
2501         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2502
2503         iwl_set_rxon_chain(priv);
2504         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2505
2506         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2507                         priv->assoc_id, priv->beacon_int);
2508
2509         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2510                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2511         else
2512                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2513
2514         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2515                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2516                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2517                 else
2518                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2519
2520                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2521                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2522
2523         }
2524
2525         iwl4965_commit_rxon(priv);
2526
2527         switch (priv->iw_mode) {
2528         case NL80211_IFTYPE_STATION:
2529                 break;
2530
2531         case NL80211_IFTYPE_ADHOC:
2532
2533                 /* assume default assoc id */
2534                 priv->assoc_id = 1;
2535
2536                 iwl_rxon_add_station(priv, priv->bssid, 0);
2537                 iwl4965_send_beacon_cmd(priv);
2538
2539                 break;
2540
2541         default:
2542                 IWL_ERROR("%s Should not be called in %d mode\n",
2543                           __func__, priv->iw_mode);
2544                 break;
2545         }
2546
2547         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2548                 priv->assoc_station_added = 1;
2549
2550         spin_lock_irqsave(&priv->lock, flags);
2551         iwl_activate_qos(priv, 0);
2552         spin_unlock_irqrestore(&priv->lock, flags);
2553
2554         /* the chain noise calibration will enabled PM upon completion
2555          * If chain noise has already been run, then we need to enable
2556          * power management here */
2557         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2558                 iwl_power_enable_management(priv);
2559
2560         /* Enable Rx differential gain and sensitivity calibrations */
2561         iwl_chain_noise_reset(priv);
2562         priv->start_calib = 1;
2563
2564 }
2565
2566 /*****************************************************************************
2567  *
2568  * mac80211 entry point functions
2569  *
2570  *****************************************************************************/
2571
2572 #define UCODE_READY_TIMEOUT     (4 * HZ)
2573
2574 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2575 {
2576         struct iwl_priv *priv = hw->priv;
2577         int ret;
2578         u16 pci_cmd;
2579
2580         IWL_DEBUG_MAC80211("enter\n");
2581
2582         if (pci_enable_device(priv->pci_dev)) {
2583                 IWL_ERROR("Fail to pci_enable_device\n");
2584                 return -ENODEV;
2585         }
2586         pci_restore_state(priv->pci_dev);
2587         pci_enable_msi(priv->pci_dev);
2588
2589         /* enable interrupts if needed: hw bug w/a */
2590         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2591         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2592                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2593                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2594         }
2595
2596         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2597                           DRV_NAME, priv);
2598         if (ret) {
2599                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2600                 goto out_disable_msi;
2601         }
2602
2603         /* we should be verifying the device is ready to be opened */
2604         mutex_lock(&priv->mutex);
2605
2606         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2607         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2608          * ucode filename and max sizes are card-specific. */
2609
2610         if (!priv->ucode_code.len) {
2611                 ret = iwl4965_read_ucode(priv);
2612                 if (ret) {
2613                         IWL_ERROR("Could not read microcode: %d\n", ret);
2614                         mutex_unlock(&priv->mutex);
2615                         goto out_release_irq;
2616                 }
2617         }
2618
2619         ret = __iwl4965_up(priv);
2620
2621         mutex_unlock(&priv->mutex);
2622
2623         iwl_rfkill_set_hw_state(priv);
2624
2625         if (ret)
2626                 goto out_release_irq;
2627
2628         if (iwl_is_rfkill(priv))
2629                 goto out;
2630
2631         IWL_DEBUG_INFO("Start UP work done.\n");
2632
2633         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2634                 return 0;
2635
2636         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2637          * mac80211 will not be run successfully. */
2638         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2639                         test_bit(STATUS_READY, &priv->status),
2640                         UCODE_READY_TIMEOUT);
2641         if (!ret) {
2642                 if (!test_bit(STATUS_READY, &priv->status)) {
2643                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2644                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2645                         ret = -ETIMEDOUT;
2646                         goto out_release_irq;
2647                 }
2648         }
2649
2650 out:
2651         priv->is_open = 1;
2652         IWL_DEBUG_MAC80211("leave\n");
2653         return 0;
2654
2655 out_release_irq:
2656         free_irq(priv->pci_dev->irq, priv);
2657 out_disable_msi:
2658         pci_disable_msi(priv->pci_dev);
2659         pci_disable_device(priv->pci_dev);
2660         priv->is_open = 0;
2661         IWL_DEBUG_MAC80211("leave - failed\n");
2662         return ret;
2663 }
2664
2665 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2666 {
2667         struct iwl_priv *priv = hw->priv;
2668
2669         IWL_DEBUG_MAC80211("enter\n");
2670
2671         if (!priv->is_open) {
2672                 IWL_DEBUG_MAC80211("leave - skip\n");
2673                 return;
2674         }
2675
2676         priv->is_open = 0;
2677
2678         if (iwl_is_ready_rf(priv)) {
2679                 /* stop mac, cancel any scan request and clear
2680                  * RXON_FILTER_ASSOC_MSK BIT
2681                  */
2682                 mutex_lock(&priv->mutex);
2683                 iwl_scan_cancel_timeout(priv, 100);
2684                 mutex_unlock(&priv->mutex);
2685         }
2686
2687         iwl4965_down(priv);
2688
2689         flush_workqueue(priv->workqueue);
2690         free_irq(priv->pci_dev->irq, priv);
2691         pci_disable_msi(priv->pci_dev);
2692         pci_save_state(priv->pci_dev);
2693         pci_disable_device(priv->pci_dev);
2694
2695         IWL_DEBUG_MAC80211("leave\n");
2696 }
2697
2698 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2699 {
2700         struct iwl_priv *priv = hw->priv;
2701
2702         IWL_DEBUG_MACDUMP("enter\n");
2703
2704         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2705                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2706
2707         if (iwl_tx_skb(priv, skb))
2708                 dev_kfree_skb_any(skb);
2709
2710         IWL_DEBUG_MACDUMP("leave\n");
2711         return 0;
2712 }
2713
2714 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2715                                  struct ieee80211_if_init_conf *conf)
2716 {
2717         struct iwl_priv *priv = hw->priv;
2718         unsigned long flags;
2719
2720         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2721
2722         if (priv->vif) {
2723                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2724                 return -EOPNOTSUPP;
2725         }
2726
2727         spin_lock_irqsave(&priv->lock, flags);
2728         priv->vif = conf->vif;
2729
2730         spin_unlock_irqrestore(&priv->lock, flags);
2731
2732         mutex_lock(&priv->mutex);
2733
2734         if (conf->mac_addr) {
2735                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2736                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2737         }
2738
2739         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2740                 /* we are not ready, will run again when ready */
2741                 set_bit(STATUS_MODE_PENDING, &priv->status);
2742
2743         mutex_unlock(&priv->mutex);
2744
2745         IWL_DEBUG_MAC80211("leave\n");
2746         return 0;
2747 }
2748
2749 /**
2750  * iwl4965_mac_config - mac80211 config callback
2751  *
2752  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2753  * be set inappropriately and the driver currently sets the hardware up to
2754  * use it whenever needed.
2755  */
2756 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2757 {
2758         struct iwl_priv *priv = hw->priv;
2759         const struct iwl_channel_info *ch_info;
2760         unsigned long flags;
2761         int ret = 0;
2762         u16 channel;
2763
2764         mutex_lock(&priv->mutex);
2765         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2766
2767         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2768                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2769                 goto out;
2770         }
2771
2772         if (!conf->radio_enabled)
2773                 iwl_radio_kill_sw_disable_radio(priv);
2774
2775         if (!iwl_is_ready(priv)) {
2776                 IWL_DEBUG_MAC80211("leave - not ready\n");
2777                 ret = -EIO;
2778                 goto out;
2779         }
2780
2781         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2782                      test_bit(STATUS_SCANNING, &priv->status))) {
2783                 IWL_DEBUG_MAC80211("leave - scanning\n");
2784                 mutex_unlock(&priv->mutex);
2785                 return 0;
2786         }
2787
2788         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2789         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2790         if (!is_channel_valid(ch_info)) {
2791                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2792                 ret = -EINVAL;
2793                 goto out;
2794         }
2795
2796         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2797             !is_channel_ibss(ch_info)) {
2798                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2799                         conf->channel->hw_value, conf->channel->band);
2800                 ret = -EINVAL;
2801                 goto out;
2802         }
2803
2804         spin_lock_irqsave(&priv->lock, flags);
2805
2806
2807         /* if we are switching from ht to 2.4 clear flags
2808          * from any ht related info since 2.4 does not
2809          * support ht */
2810         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2811 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2812             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2813 #endif
2814         )
2815                 priv->staging_rxon.flags = 0;
2816
2817         iwl_set_rxon_channel(priv, conf->channel);
2818
2819         iwl_set_flags_for_band(priv, conf->channel->band);
2820
2821         /* The list of supported rates and rate mask can be different
2822          * for each band; since the band may have changed, reset
2823          * the rate mask to what mac80211 lists */
2824         iwl4965_set_rate(priv);
2825
2826         spin_unlock_irqrestore(&priv->lock, flags);
2827
2828 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2829         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2830                 iwl4965_hw_channel_switch(priv, conf->channel);
2831                 goto out;
2832         }
2833 #endif
2834
2835         if (!conf->radio_enabled) {
2836                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2837                 goto out;
2838         }
2839
2840         if (iwl_is_rfkill(priv)) {
2841                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2842                 ret = -EIO;
2843                 goto out;
2844         }
2845
2846         if (conf->flags & IEEE80211_CONF_PS)
2847                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2848         else
2849                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2850         if (ret)
2851                 IWL_DEBUG_MAC80211("Error setting power level\n");
2852
2853         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2854                            priv->tx_power_user_lmt, conf->power_level);
2855
2856         iwl_set_tx_power(priv, conf->power_level, false);
2857
2858         iwl4965_set_rate(priv);
2859
2860         if (memcmp(&priv->active_rxon,
2861                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2862                 iwl4965_commit_rxon(priv);
2863         else
2864                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2865
2866         IWL_DEBUG_MAC80211("leave\n");
2867
2868 out:
2869         mutex_unlock(&priv->mutex);
2870         return ret;
2871 }
2872
2873 static void iwl4965_config_ap(struct iwl_priv *priv)
2874 {
2875         int ret = 0;
2876         unsigned long flags;
2877
2878         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2879                 return;
2880
2881         /* The following should be done only at AP bring up */
2882         if (!(iwl_is_associated(priv))) {
2883
2884                 /* RXON - unassoc (to set timing command) */
2885                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2886                 iwl4965_commit_rxon(priv);
2887
2888                 /* RXON Timing */
2889                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2890                 iwl4965_setup_rxon_timing(priv);
2891                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2892                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2893                 if (ret)
2894                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2895                                         "Attempting to continue.\n");
2896
2897                 iwl_set_rxon_chain(priv);
2898
2899                 /* FIXME: what should be the assoc_id for AP? */
2900                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2901                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2902                         priv->staging_rxon.flags |=
2903                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2904                 else
2905                         priv->staging_rxon.flags &=
2906                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2907
2908                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2909                         if (priv->assoc_capability &
2910                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2911                                 priv->staging_rxon.flags |=
2912                                         RXON_FLG_SHORT_SLOT_MSK;
2913                         else
2914                                 priv->staging_rxon.flags &=
2915                                         ~RXON_FLG_SHORT_SLOT_MSK;
2916
2917                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2918                                 priv->staging_rxon.flags &=
2919                                         ~RXON_FLG_SHORT_SLOT_MSK;
2920                 }
2921                 /* restore RXON assoc */
2922                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2923                 iwl4965_commit_rxon(priv);
2924                 spin_lock_irqsave(&priv->lock, flags);
2925                 iwl_activate_qos(priv, 1);
2926                 spin_unlock_irqrestore(&priv->lock, flags);
2927                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2928         }
2929         iwl4965_send_beacon_cmd(priv);
2930
2931         /* FIXME - we need to add code here to detect a totally new
2932          * configuration, reset the AP, unassoc, rxon timing, assoc,
2933          * clear sta table, add BCAST sta... */
2934 }
2935
2936 /* temporary */
2937 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2938
2939 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2940                                         struct ieee80211_vif *vif,
2941                                     struct ieee80211_if_conf *conf)
2942 {
2943         struct iwl_priv *priv = hw->priv;
2944         unsigned long flags;
2945         int rc;
2946
2947         if (conf == NULL)
2948                 return -EIO;
2949
2950         if (priv->vif != vif) {
2951                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2952                 return 0;
2953         }
2954
2955         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2956             conf->changed & IEEE80211_IFCC_BEACON) {
2957                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2958                 if (!beacon)
2959                         return -ENOMEM;
2960                 rc = iwl4965_mac_beacon_update(hw, beacon);
2961                 if (rc)
2962                         return rc;
2963         }
2964
2965         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2966             (!conf->ssid_len)) {
2967                 IWL_DEBUG_MAC80211
2968                     ("Leaving in AP mode because HostAPD is not ready.\n");
2969                 return 0;
2970         }
2971
2972         if (!iwl_is_alive(priv))
2973                 return -EAGAIN;
2974
2975         mutex_lock(&priv->mutex);
2976
2977         if (conf->bssid)
2978                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2979
2980 /*
2981  * very dubious code was here; the probe filtering flag is never set:
2982  *
2983         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2984             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2985  */
2986
2987         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2988                 if (!conf->bssid) {
2989                         conf->bssid = priv->mac_addr;
2990                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2991                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2992                                            conf->bssid);
2993                 }
2994                 if (priv->ibss_beacon)
2995                         dev_kfree_skb(priv->ibss_beacon);
2996
2997                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2998         }
2999
3000         if (iwl_is_rfkill(priv))
3001                 goto done;
3002
3003         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3004             !is_multicast_ether_addr(conf->bssid)) {
3005                 /* If there is currently a HW scan going on in the background
3006                  * then we need to cancel it else the RXON below will fail. */
3007                 if (iwl_scan_cancel_timeout(priv, 100)) {
3008                         IWL_WARNING("Aborted scan still in progress "
3009                                     "after 100ms\n");
3010                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3011                         mutex_unlock(&priv->mutex);
3012                         return -EAGAIN;
3013                 }
3014                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3015
3016                 /* TODO: Audit driver for usage of these members and see
3017                  * if mac80211 deprecates them (priv->bssid looks like it
3018                  * shouldn't be there, but I haven't scanned the IBSS code
3019                  * to verify) - jpk */
3020                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3021
3022                 if (priv->iw_mode == NL80211_IFTYPE_AP)
3023                         iwl4965_config_ap(priv);
3024                 else {
3025                         rc = iwl4965_commit_rxon(priv);
3026                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3027                                 iwl_rxon_add_station(
3028                                         priv, priv->active_rxon.bssid_addr, 1);
3029                 }
3030
3031         } else {
3032                 iwl_scan_cancel_timeout(priv, 100);
3033                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3034                 iwl4965_commit_rxon(priv);
3035         }
3036
3037  done:
3038         spin_lock_irqsave(&priv->lock, flags);
3039         if (!conf->ssid_len)
3040                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3041         else
3042                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3043
3044         priv->essid_len = conf->ssid_len;
3045         spin_unlock_irqrestore(&priv->lock, flags);
3046
3047         IWL_DEBUG_MAC80211("leave\n");
3048         mutex_unlock(&priv->mutex);
3049
3050         return 0;
3051 }
3052
3053 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3054                                  unsigned int changed_flags,
3055                                  unsigned int *total_flags,
3056                                  int mc_count, struct dev_addr_list *mc_list)
3057 {
3058         struct iwl_priv *priv = hw->priv;
3059
3060         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3061                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3062                                    NL80211_IFTYPE_MONITOR,
3063                                    changed_flags, *total_flags);
3064                 /* queue work 'cuz mac80211 is holding a lock which
3065                  * prevents us from issuing (synchronous) f/w cmds */
3066                 queue_work(priv->workqueue, &priv->set_monitor);
3067         }
3068         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3069                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3070 }
3071
3072 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3073                                      struct ieee80211_if_init_conf *conf)
3074 {
3075         struct iwl_priv *priv = hw->priv;
3076
3077         IWL_DEBUG_MAC80211("enter\n");
3078
3079         mutex_lock(&priv->mutex);
3080
3081         if (iwl_is_ready_rf(priv)) {
3082                 iwl_scan_cancel_timeout(priv, 100);
3083                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3084                 iwl4965_commit_rxon(priv);
3085         }
3086         if (priv->vif == conf->vif) {
3087                 priv->vif = NULL;
3088                 memset(priv->bssid, 0, ETH_ALEN);
3089                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3090                 priv->essid_len = 0;
3091         }
3092         mutex_unlock(&priv->mutex);
3093
3094         IWL_DEBUG_MAC80211("leave\n");
3095
3096 }
3097
3098 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3099 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3100                                      struct ieee80211_vif *vif,
3101                                      struct ieee80211_bss_conf *bss_conf,
3102                                      u32 changes)
3103 {
3104         struct iwl_priv *priv = hw->priv;
3105
3106         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3107
3108         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3109                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3110                                    bss_conf->use_short_preamble);
3111                 if (bss_conf->use_short_preamble)
3112                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3113                 else
3114                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3115         }
3116
3117         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3118                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3119                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3120                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3121                 else
3122                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3123         }
3124
3125         if (changes & BSS_CHANGED_HT) {
3126                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3127                 iwl4965_ht_conf(priv, bss_conf);
3128                 iwl_set_rxon_chain(priv);
3129         }
3130
3131         if (changes & BSS_CHANGED_ASSOC) {
3132                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3133                 /* This should never happen as this function should
3134                  * never be called from interrupt context. */
3135                 if (WARN_ON_ONCE(in_interrupt()))
3136                         return;
3137                 if (bss_conf->assoc) {
3138                         priv->assoc_id = bss_conf->aid;
3139                         priv->beacon_int = bss_conf->beacon_int;
3140                         priv->power_data.dtim_period = bss_conf->dtim_period;
3141                         priv->timestamp = bss_conf->timestamp;
3142                         priv->assoc_capability = bss_conf->assoc_capability;
3143
3144                         /* we have just associated, don't start scan too early
3145                          * leave time for EAPOL exchange to complete
3146                          */
3147                         priv->next_scan_jiffies = jiffies +
3148                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3149                         mutex_lock(&priv->mutex);
3150                         iwl4965_post_associate(priv);
3151                         mutex_unlock(&priv->mutex);
3152                 } else {
3153                         priv->assoc_id = 0;
3154                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3155                 }
3156         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3157                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3158                         iwl_send_rxon_assoc(priv);
3159         }
3160
3161 }
3162
3163 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3164 {
3165         unsigned long flags;
3166         struct iwl_priv *priv = hw->priv;
3167         int ret;
3168
3169         IWL_DEBUG_MAC80211("enter\n");
3170
3171         mutex_lock(&priv->mutex);
3172         spin_lock_irqsave(&priv->lock, flags);
3173
3174         if (!iwl_is_ready_rf(priv)) {
3175                 ret = -EIO;
3176                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3177                 goto out_unlock;
3178         }
3179
3180         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
3181                 ret = -EIO;
3182                 IWL_ERROR("ERROR: APs don't scan\n");
3183                 goto out_unlock;
3184         }
3185
3186         /* We don't schedule scan within next_scan_jiffies period.
3187          * Avoid scanning during possible EAPOL exchange, return
3188          * success immediately.
3189          */
3190         if (priv->next_scan_jiffies &&
3191             time_after(priv->next_scan_jiffies, jiffies)) {
3192                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3193                 queue_work(priv->workqueue, &priv->scan_completed);
3194                 ret = 0;
3195                 goto out_unlock;
3196         }
3197
3198         /* if we just finished scan ask for delay */
3199         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3200             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3201                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3202                 queue_work(priv->workqueue, &priv->scan_completed);
3203                 ret = 0;
3204                 goto out_unlock;
3205         }
3206
3207         if (ssid_len) {
3208                 priv->one_direct_scan = 1;
3209                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3210                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3211         } else {
3212                 priv->one_direct_scan = 0;
3213         }
3214
3215         ret = iwl_scan_initiate(priv);
3216
3217         IWL_DEBUG_MAC80211("leave\n");
3218
3219 out_unlock:
3220         spin_unlock_irqrestore(&priv->lock, flags);
3221         mutex_unlock(&priv->mutex);
3222
3223         return ret;
3224 }
3225
3226 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3227                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3228                         u32 iv32, u16 *phase1key)
3229 {
3230         struct iwl_priv *priv = hw->priv;
3231         u8 sta_id = IWL_INVALID_STATION;
3232         unsigned long flags;
3233         __le16 key_flags = 0;
3234         int i;
3235
3236         IWL_DEBUG_MAC80211("enter\n");
3237
3238         sta_id = iwl_find_station(priv, addr);
3239         if (sta_id == IWL_INVALID_STATION) {
3240                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3241                                    addr);
3242                 return;
3243         }
3244
3245         iwl_scan_cancel_timeout(priv, 100);
3246
3247         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3248         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3249         key_flags &= ~STA_KEY_FLG_INVALID;
3250
3251         if (sta_id == priv->hw_params.bcast_sta_id)
3252                 key_flags |= STA_KEY_MULTICAST_MSK;
3253
3254         spin_lock_irqsave(&priv->sta_lock, flags);
3255
3256         priv->stations[sta_id].sta.key.key_flags = key_flags;
3257         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3258
3259         for (i = 0; i < 5; i++)
3260                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3261                         cpu_to_le16(phase1key[i]);
3262
3263         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3264         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3265
3266         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3267
3268         spin_unlock_irqrestore(&priv->sta_lock, flags);
3269
3270         IWL_DEBUG_MAC80211("leave\n");
3271 }
3272
3273 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3274                            const u8 *local_addr, const u8 *addr,
3275                            struct ieee80211_key_conf *key)
3276 {
3277         struct iwl_priv *priv = hw->priv;
3278         int ret = 0;
3279         u8 sta_id = IWL_INVALID_STATION;
3280         u8 is_default_wep_key = 0;
3281
3282         IWL_DEBUG_MAC80211("enter\n");
3283
3284         if (priv->hw_params.sw_crypto) {
3285                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3286                 return -EOPNOTSUPP;
3287         }
3288
3289         if (is_zero_ether_addr(addr))
3290                 /* only support pairwise keys */
3291                 return -EOPNOTSUPP;
3292
3293         sta_id = iwl_find_station(priv, addr);
3294         if (sta_id == IWL_INVALID_STATION) {
3295                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3296                                    addr);
3297                 return -EINVAL;
3298
3299         }
3300
3301         mutex_lock(&priv->mutex);
3302         iwl_scan_cancel_timeout(priv, 100);
3303         mutex_unlock(&priv->mutex);
3304
3305         /* If we are getting WEP group key and we didn't receive any key mapping
3306          * so far, we are in legacy wep mode (group key only), otherwise we are
3307          * in 1X mode.
3308          * In legacy wep mode, we use another host command to the uCode */
3309         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3310                 priv->iw_mode != NL80211_IFTYPE_AP) {
3311                 if (cmd == SET_KEY)
3312                         is_default_wep_key = !priv->key_mapping_key;
3313                 else
3314                         is_default_wep_key =
3315                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3316         }
3317
3318         switch (cmd) {
3319         case SET_KEY:
3320                 if (is_default_wep_key)
3321                         ret = iwl_set_default_wep_key(priv, key);
3322                 else
3323                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3324
3325                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3326                 break;
3327         case DISABLE_KEY:
3328                 if (is_default_wep_key)
3329                         ret = iwl_remove_default_wep_key(priv, key);
3330                 else
3331                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3332
3333                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3334                 break;
3335         default:
3336                 ret = -EINVAL;
3337         }
3338
3339         IWL_DEBUG_MAC80211("leave\n");
3340
3341         return ret;
3342 }
3343
3344 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3345                            const struct ieee80211_tx_queue_params *params)
3346 {
3347         struct iwl_priv *priv = hw->priv;
3348         unsigned long flags;
3349         int q;
3350
3351         IWL_DEBUG_MAC80211("enter\n");
3352
3353         if (!iwl_is_ready_rf(priv)) {
3354                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3355                 return -EIO;
3356         }
3357
3358         if (queue >= AC_NUM) {
3359                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3360                 return 0;
3361         }
3362
3363         if (!priv->qos_data.qos_enable) {
3364                 priv->qos_data.qos_active = 0;
3365                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3366                 return 0;
3367         }
3368         q = AC_NUM - 1 - queue;
3369
3370         spin_lock_irqsave(&priv->lock, flags);
3371
3372         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3373         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3374         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3375         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3376                         cpu_to_le16((params->txop * 32));
3377
3378         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3379         priv->qos_data.qos_active = 1;
3380
3381         if (priv->iw_mode == NL80211_IFTYPE_AP)
3382                 iwl_activate_qos(priv, 1);
3383         else if (priv->assoc_id && iwl_is_associated(priv))
3384                 iwl_activate_qos(priv, 0);
3385
3386         spin_unlock_irqrestore(&priv->lock, flags);
3387
3388         IWL_DEBUG_MAC80211("leave\n");
3389         return 0;
3390 }
3391
3392 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3393                              enum ieee80211_ampdu_mlme_action action,
3394                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3395 {
3396         struct iwl_priv *priv = hw->priv;
3397
3398         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3399                      sta->addr, tid);
3400
3401         if (!(priv->cfg->sku & IWL_SKU_N))
3402                 return -EACCES;
3403
3404         switch (action) {
3405         case IEEE80211_AMPDU_RX_START:
3406                 IWL_DEBUG_HT("start Rx\n");
3407                 return iwl_rx_agg_start(priv, sta->addr, tid, *ssn);
3408         case IEEE80211_AMPDU_RX_STOP:
3409                 IWL_DEBUG_HT("stop Rx\n");
3410                 return iwl_rx_agg_stop(priv, sta->addr, tid);
3411         case IEEE80211_AMPDU_TX_START:
3412                 IWL_DEBUG_HT("start Tx\n");
3413                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3414         case IEEE80211_AMPDU_TX_STOP:
3415                 IWL_DEBUG_HT("stop Tx\n");
3416                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3417         default:
3418                 IWL_DEBUG_HT("unknown\n");
3419                 return -EINVAL;
3420                 break;
3421         }
3422         return 0;
3423 }
3424 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3425                                 struct ieee80211_tx_queue_stats *stats)
3426 {
3427         struct iwl_priv *priv = hw->priv;
3428         int i, avail;
3429         struct iwl_tx_queue *txq;
3430         struct iwl_queue *q;
3431         unsigned long flags;
3432
3433         IWL_DEBUG_MAC80211("enter\n");
3434
3435         if (!iwl_is_ready_rf(priv)) {
3436                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3437                 return -EIO;
3438         }
3439
3440         spin_lock_irqsave(&priv->lock, flags);
3441
3442         for (i = 0; i < AC_NUM; i++) {
3443                 txq = &priv->txq[i];
3444                 q = &txq->q;
3445                 avail = iwl_queue_space(q);
3446
3447                 stats[i].len = q->n_window - avail;
3448                 stats[i].limit = q->n_window - q->high_mark;
3449                 stats[i].count = q->n_window;
3450
3451         }
3452         spin_unlock_irqrestore(&priv->lock, flags);
3453
3454         IWL_DEBUG_MAC80211("leave\n");
3455
3456         return 0;
3457 }
3458
3459 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3460                              struct ieee80211_low_level_stats *stats)
3461 {
3462         struct iwl_priv *priv = hw->priv;
3463
3464         priv = hw->priv;
3465         IWL_DEBUG_MAC80211("enter\n");
3466         IWL_DEBUG_MAC80211("leave\n");
3467
3468         return 0;
3469 }
3470
3471 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3472 {
3473         struct iwl_priv *priv = hw->priv;
3474         unsigned long flags;
3475
3476         mutex_lock(&priv->mutex);
3477         IWL_DEBUG_MAC80211("enter\n");
3478
3479         spin_lock_irqsave(&priv->lock, flags);
3480         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3481         spin_unlock_irqrestore(&priv->lock, flags);
3482
3483         iwl_reset_qos(priv);
3484
3485         spin_lock_irqsave(&priv->lock, flags);
3486         priv->assoc_id = 0;
3487         priv->assoc_capability = 0;
3488         priv->assoc_station_added = 0;
3489
3490         /* new association get rid of ibss beacon skb */
3491         if (priv->ibss_beacon)
3492                 dev_kfree_skb(priv->ibss_beacon);
3493
3494         priv->ibss_beacon = NULL;
3495
3496         priv->beacon_int = priv->hw->conf.beacon_int;
3497         priv->timestamp = 0;
3498         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3499                 priv->beacon_int = 0;
3500
3501         spin_unlock_irqrestore(&priv->lock, flags);
3502
3503         if (!iwl_is_ready_rf(priv)) {
3504                 IWL_DEBUG_MAC80211("leave - not ready\n");
3505                 mutex_unlock(&priv->mutex);
3506                 return;
3507         }
3508
3509         /* we are restarting association process
3510          * clear RXON_FILTER_ASSOC_MSK bit
3511          */
3512         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3513                 iwl_scan_cancel_timeout(priv, 100);
3514                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3515                 iwl4965_commit_rxon(priv);
3516         }
3517
3518         iwl_power_update_mode(priv, 0);
3519
3520         /* Per mac80211.h: This is only used in IBSS mode... */
3521         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3522
3523                 /* switch to CAM during association period.
3524                  * the ucode will block any association/authentication
3525                  * frome during assiciation period if it can not hear
3526                  * the AP because of PM. the timer enable PM back is
3527                  * association do not complete
3528                  */
3529                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3530                                                      IEEE80211_CHAN_RADAR))
3531                                 iwl_power_disable_management(priv, 3000);
3532
3533                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3534                 mutex_unlock(&priv->mutex);
3535                 return;
3536         }
3537
3538         iwl4965_set_rate(priv);
3539
3540         mutex_unlock(&priv->mutex);
3541
3542         IWL_DEBUG_MAC80211("leave\n");
3543 }
3544
3545 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3546 {
3547         struct iwl_priv *priv = hw->priv;
3548         unsigned long flags;
3549         __le64 timestamp;
3550
3551         mutex_lock(&priv->mutex);
3552         IWL_DEBUG_MAC80211("enter\n");
3553
3554         if (!iwl_is_ready_rf(priv)) {
3555                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3556                 mutex_unlock(&priv->mutex);
3557                 return -EIO;
3558         }
3559
3560         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3561                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3562                 mutex_unlock(&priv->mutex);
3563                 return -EIO;
3564         }
3565
3566         spin_lock_irqsave(&priv->lock, flags);
3567
3568         if (priv->ibss_beacon)
3569                 dev_kfree_skb(priv->ibss_beacon);
3570
3571         priv->ibss_beacon = skb;
3572
3573         priv->assoc_id = 0;
3574         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3575         priv->timestamp = le64_to_cpu(timestamp);
3576
3577         IWL_DEBUG_MAC80211("leave\n");
3578         spin_unlock_irqrestore(&priv->lock, flags);
3579
3580         iwl_reset_qos(priv);
3581
3582         iwl4965_post_associate(priv);
3583
3584         mutex_unlock(&priv->mutex);
3585
3586         return 0;
3587 }
3588
3589 /*****************************************************************************
3590  *
3591  * sysfs attributes
3592  *
3593  *****************************************************************************/
3594
3595 #ifdef CONFIG_IWLWIFI_DEBUG
3596
3597 /*
3598  * The following adds a new attribute to the sysfs representation
3599  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3600  * used for controlling the debug level.
3601  *
3602  * See the level definitions in iwl for details.
3603  */
3604
3605 static ssize_t show_debug_level(struct device *d,
3606                                 struct device_attribute *attr, char *buf)
3607 {
3608         struct iwl_priv *priv = d->driver_data;
3609
3610         return sprintf(buf, "0x%08X\n", priv->debug_level);
3611 }
3612 static ssize_t store_debug_level(struct device *d,
3613                                 struct device_attribute *attr,
3614                                  const char *buf, size_t count)
3615 {
3616         struct iwl_priv *priv = d->driver_data;
3617         unsigned long val;
3618         int ret;
3619
3620         ret = strict_strtoul(buf, 0, &val);
3621         if (ret)
3622                 printk(KERN_INFO DRV_NAME
3623                        ": %s is not in hex or decimal form.\n", buf);
3624         else
3625                 priv->debug_level = val;
3626
3627         return strnlen(buf, count);
3628 }
3629
3630 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3631                         show_debug_level, store_debug_level);
3632
3633
3634 #endif /* CONFIG_IWLWIFI_DEBUG */
3635
3636
3637 static ssize_t show_version(struct device *d,
3638                                 struct device_attribute *attr, char *buf)
3639 {
3640         struct iwl_priv *priv = d->driver_data;
3641         struct iwl_alive_resp *palive = &priv->card_alive;
3642         ssize_t pos = 0;
3643         u16 eeprom_ver;
3644
3645         if (palive->is_valid)
3646                 pos += sprintf(buf + pos,
3647                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3648                                 "fw type: 0x%01X 0x%01X\n",
3649                                 palive->ucode_major, palive->ucode_minor,
3650                                 palive->sw_rev[0], palive->sw_rev[1],
3651                                 palive->ver_type, palive->ver_subtype);
3652         else
3653                 pos += sprintf(buf + pos, "fw not loaded\n");
3654
3655         if (priv->eeprom) {
3656                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3657                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3658                                  eeprom_ver);
3659         } else {
3660                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3661         }
3662
3663         return pos;
3664 }
3665
3666 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3667
3668 static ssize_t show_temperature(struct device *d,
3669                                 struct device_attribute *attr, char *buf)
3670 {
3671         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3672
3673         if (!iwl_is_alive(priv))
3674                 return -EAGAIN;
3675
3676         return sprintf(buf, "%d\n", priv->temperature);
3677 }
3678
3679 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3680
3681 static ssize_t show_tx_power(struct device *d,
3682                              struct device_attribute *attr, char *buf)
3683 {
3684         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3685         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3686 }
3687
3688 static ssize_t store_tx_power(struct device *d,
3689                               struct device_attribute *attr,
3690                               const char *buf, size_t count)
3691 {
3692         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3693         unsigned long val;
3694         int ret;
3695
3696         ret = strict_strtoul(buf, 10, &val);
3697         if (ret)
3698                 printk(KERN_INFO DRV_NAME
3699                        ": %s is not in decimal form.\n", buf);
3700         else
3701                 iwl_set_tx_power(priv, val, false);
3702
3703         return count;
3704 }
3705
3706 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3707
3708 static ssize_t show_flags(struct device *d,
3709                           struct device_attribute *attr, char *buf)
3710 {
3711         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3712
3713         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3714 }
3715
3716 static ssize_t store_flags(struct device *d,
3717                            struct device_attribute *attr,
3718                            const char *buf, size_t count)
3719 {
3720         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3721         unsigned long val;
3722         u32 flags;
3723         int ret = strict_strtoul(buf, 0, &val);
3724         if (ret)
3725                 return ret;
3726         flags = (u32)val;
3727
3728         mutex_lock(&priv->mutex);
3729         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3730                 /* Cancel any currently running scans... */
3731                 if (iwl_scan_cancel_timeout(priv, 100))
3732                         IWL_WARNING("Could not cancel scan.\n");
3733                 else {
3734                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3735                         priv->staging_rxon.flags = cpu_to_le32(flags);
3736                         iwl4965_commit_rxon(priv);
3737                 }
3738         }
3739         mutex_unlock(&priv->mutex);
3740
3741         return count;
3742 }
3743
3744 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3745
3746 static ssize_t show_filter_flags(struct device *d,
3747                                  struct device_attribute *attr, char *buf)
3748 {
3749         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3750
3751         return sprintf(buf, "0x%04X\n",
3752                 le32_to_cpu(priv->active_rxon.filter_flags));
3753 }
3754
3755 static ssize_t store_filter_flags(struct device *d,
3756                                   struct device_attribute *attr,
3757                                   const char *buf, size_t count)
3758 {
3759         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3760         unsigned long val;
3761         u32 filter_flags;
3762         int ret = strict_strtoul(buf, 0, &val);
3763         if (ret)
3764                 return ret;
3765         filter_flags = (u32)val;
3766
3767         mutex_lock(&priv->mutex);
3768         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3769                 /* Cancel any currently running scans... */
3770                 if (iwl_scan_cancel_timeout(priv, 100))
3771                         IWL_WARNING("Could not cancel scan.\n");
3772                 else {
3773                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3774                                        "0x%04X\n", filter_flags);
3775                         priv->staging_rxon.filter_flags =
3776                                 cpu_to_le32(filter_flags);
3777                         iwl4965_commit_rxon(priv);
3778                 }
3779         }
3780         mutex_unlock(&priv->mutex);
3781
3782         return count;
3783 }
3784
3785 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3786                    store_filter_flags);
3787
3788 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3789
3790 static ssize_t show_measurement(struct device *d,
3791                                 struct device_attribute *attr, char *buf)
3792 {
3793         struct iwl_priv *priv = dev_get_drvdata(d);
3794         struct iwl4965_spectrum_notification measure_report;
3795         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3796         u8 *data = (u8 *)&measure_report;
3797         unsigned long flags;
3798
3799         spin_lock_irqsave(&priv->lock, flags);
3800         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3801                 spin_unlock_irqrestore(&priv->lock, flags);
3802                 return 0;
3803         }
3804         memcpy(&measure_report, &priv->measure_report, size);
3805         priv->measurement_status = 0;
3806         spin_unlock_irqrestore(&priv->lock, flags);
3807
3808         while (size && (PAGE_SIZE - len)) {
3809                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3810                                    PAGE_SIZE - len, 1);
3811                 len = strlen(buf);
3812                 if (PAGE_SIZE - len)
3813                         buf[len++] = '\n';
3814
3815                 ofs += 16;
3816                 size -= min(size, 16U);
3817         }
3818
3819         return len;
3820 }
3821
3822 static ssize_t store_measurement(struct device *d,
3823                                  struct device_attribute *attr,
3824                                  const char *buf, size_t count)
3825 {
3826         struct iwl_priv *priv = dev_get_drvdata(d);
3827         struct ieee80211_measurement_params params = {
3828                 .channel = le16_to_cpu(priv->active_rxon.channel),
3829                 .start_time = cpu_to_le64(priv->last_tsf),
3830                 .duration = cpu_to_le16(1),
3831         };
3832         u8 type = IWL_MEASURE_BASIC;
3833         u8 buffer[32];
3834         u8 channel;
3835
3836         if (count) {
3837                 char *p = buffer;
3838                 strncpy(buffer, buf, min(sizeof(buffer), count));
3839                 channel = simple_strtoul(p, NULL, 0);
3840                 if (channel)
3841                         params.channel = channel;
3842
3843                 p = buffer;
3844                 while (*p && *p != ' ')
3845                         p++;
3846                 if (*p)
3847                         type = simple_strtoul(p + 1, NULL, 0);
3848         }
3849
3850         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3851                        "channel %d (for '%s')\n", type, params.channel, buf);
3852         iwl4965_get_measurement(priv, &params, type);
3853
3854         return count;
3855 }
3856
3857 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3858                    show_measurement, store_measurement);
3859 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3860
3861 static ssize_t store_retry_rate(struct device *d,
3862                                 struct device_attribute *attr,
3863                                 const char *buf, size_t count)
3864 {
3865         struct iwl_priv *priv = dev_get_drvdata(d);
3866         long val;
3867         int ret  = strict_strtol(buf, 10, &val);
3868         if (!ret)
3869                 return ret;
3870
3871         priv->retry_rate = (val > 0) ? val : 1;
3872
3873         return count;
3874 }
3875
3876 static ssize_t show_retry_rate(struct device *d,
3877                                struct device_attribute *attr, char *buf)
3878 {
3879         struct iwl_priv *priv = dev_get_drvdata(d);
3880         return sprintf(buf, "%d", priv->retry_rate);
3881 }
3882
3883 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3884                    store_retry_rate);
3885
3886 static ssize_t store_power_level(struct device *d,
3887                                  struct device_attribute *attr,
3888                                  const char *buf, size_t count)
3889 {
3890         struct iwl_priv *priv = dev_get_drvdata(d);
3891         int ret;
3892         unsigned long mode;
3893
3894
3895         mutex_lock(&priv->mutex);
3896
3897         if (!iwl_is_ready(priv)) {
3898                 ret = -EAGAIN;
3899                 goto out;
3900         }
3901
3902         ret = strict_strtoul(buf, 10, &mode);
3903         if (ret)
3904                 goto out;
3905
3906         ret = iwl_power_set_user_mode(priv, mode);
3907         if (ret) {
3908                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3909                 goto out;
3910         }
3911         ret = count;
3912
3913  out:
3914         mutex_unlock(&priv->mutex);
3915         return ret;
3916 }
3917
3918 static ssize_t show_power_level(struct device *d,
3919                                 struct device_attribute *attr, char *buf)
3920 {
3921         struct iwl_priv *priv = dev_get_drvdata(d);
3922         int mode = priv->power_data.user_power_setting;
3923         int system = priv->power_data.system_power_setting;
3924         int level = priv->power_data.power_mode;
3925         char *p = buf;
3926
3927         switch (system) {
3928         case IWL_POWER_SYS_AUTO:
3929                 p += sprintf(p, "SYSTEM:auto");
3930                 break;
3931         case IWL_POWER_SYS_AC:
3932                 p += sprintf(p, "SYSTEM:ac");
3933                 break;
3934         case IWL_POWER_SYS_BATTERY:
3935                 p += sprintf(p, "SYSTEM:battery");
3936                 break;
3937         }
3938
3939         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3940         p += sprintf(p, "\tINDEX:%d", level);
3941         p += sprintf(p, "\n");
3942         return p - buf + 1;
3943 }
3944
3945 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3946                    store_power_level);
3947
3948 static ssize_t show_channels(struct device *d,
3949                              struct device_attribute *attr, char *buf)
3950 {
3951
3952         struct iwl_priv *priv = dev_get_drvdata(d);
3953         struct ieee80211_channel *channels = NULL;
3954         const struct ieee80211_supported_band *supp_band = NULL;
3955         int len = 0, i;
3956         int count = 0;
3957
3958         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3959                 return -EAGAIN;
3960
3961         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3962         channels = supp_band->channels;
3963         count = supp_band->n_channels;
3964
3965         len += sprintf(&buf[len],
3966                         "Displaying %d channels in 2.4GHz band "
3967                         "(802.11bg):\n", count);
3968
3969         for (i = 0; i < count; i++)
3970                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3971                                 ieee80211_frequency_to_channel(
3972                                 channels[i].center_freq),
3973                                 channels[i].max_power,
3974                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3975                                 " (IEEE 802.11h required)" : "",
3976                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3977                                 || (channels[i].flags &
3978                                 IEEE80211_CHAN_RADAR)) ? "" :
3979                                 ", IBSS",
3980                                 channels[i].flags &
3981                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3982                                 "passive only" : "active/passive");
3983
3984         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3985         channels = supp_band->channels;
3986         count = supp_band->n_channels;
3987
3988         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3989                         "(802.11a):\n", count);
3990
3991         for (i = 0; i < count; i++)
3992                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3993                                 ieee80211_frequency_to_channel(
3994                                 channels[i].center_freq),
3995                                 channels[i].max_power,
3996                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3997                                 " (IEEE 802.11h required)" : "",
3998                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3999                                 || (channels[i].flags &
4000                                 IEEE80211_CHAN_RADAR)) ? "" :
4001                                 ", IBSS",
4002                                 channels[i].flags &
4003                                 IEEE80211_CHAN_PASSIVE_SCAN ?
4004                                 "passive only" : "active/passive");
4005
4006         return len;
4007 }
4008
4009 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4010
4011 static ssize_t show_statistics(struct device *d,
4012                                struct device_attribute *attr, char *buf)
4013 {
4014         struct iwl_priv *priv = dev_get_drvdata(d);
4015         u32 size = sizeof(struct iwl_notif_statistics);
4016         u32 len = 0, ofs = 0;
4017         u8 *data = (u8 *)&priv->statistics;
4018         int rc = 0;
4019
4020         if (!iwl_is_alive(priv))
4021                 return -EAGAIN;
4022
4023         mutex_lock(&priv->mutex);
4024         rc = iwl_send_statistics_request(priv, 0);
4025         mutex_unlock(&priv->mutex);
4026
4027         if (rc) {
4028                 len = sprintf(buf,
4029                               "Error sending statistics request: 0x%08X\n", rc);
4030                 return len;
4031         }
4032
4033         while (size && (PAGE_SIZE - len)) {
4034                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4035                                    PAGE_SIZE - len, 1);
4036                 len = strlen(buf);
4037                 if (PAGE_SIZE - len)
4038                         buf[len++] = '\n';
4039
4040                 ofs += 16;
4041                 size -= min(size, 16U);
4042         }
4043
4044         return len;
4045 }
4046
4047 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4048
4049 static ssize_t show_status(struct device *d,
4050                            struct device_attribute *attr, char *buf)
4051 {
4052         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4053         if (!iwl_is_alive(priv))
4054                 return -EAGAIN;
4055         return sprintf(buf, "0x%08x\n", (int)priv->status);
4056 }
4057
4058 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4059
4060 /*****************************************************************************
4061  *
4062  * driver setup and teardown
4063  *
4064  *****************************************************************************/
4065
4066 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4067 {
4068         priv->workqueue = create_workqueue(DRV_NAME);
4069
4070         init_waitqueue_head(&priv->wait_command_queue);
4071
4072         INIT_WORK(&priv->up, iwl4965_bg_up);
4073         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4074         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4075         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4076         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4077         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4078         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4079         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4080         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4081
4082         iwl_setup_scan_deferred_work(priv);
4083         iwl_setup_power_deferred_work(priv);
4084
4085         if (priv->cfg->ops->lib->setup_deferred_work)
4086                 priv->cfg->ops->lib->setup_deferred_work(priv);
4087
4088         init_timer(&priv->statistics_periodic);
4089         priv->statistics_periodic.data = (unsigned long)priv;
4090         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4091
4092         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4093                      iwl4965_irq_tasklet, (unsigned long)priv);
4094 }
4095
4096 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4097 {
4098         if (priv->cfg->ops->lib->cancel_deferred_work)
4099                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4100
4101         cancel_delayed_work_sync(&priv->init_alive_start);
4102         cancel_delayed_work(&priv->scan_check);
4103         cancel_delayed_work_sync(&priv->set_power_save);
4104         cancel_delayed_work(&priv->alive_start);
4105         cancel_work_sync(&priv->beacon_update);
4106         del_timer_sync(&priv->statistics_periodic);
4107 }
4108
4109 static struct attribute *iwl4965_sysfs_entries[] = {
4110         &dev_attr_channels.attr,
4111         &dev_attr_flags.attr,
4112         &dev_attr_filter_flags.attr,
4113 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4114         &dev_attr_measurement.attr,
4115 #endif
4116         &dev_attr_power_level.attr,
4117         &dev_attr_retry_rate.attr,
4118         &dev_attr_statistics.attr,
4119         &dev_attr_status.attr,
4120         &dev_attr_temperature.attr,
4121         &dev_attr_tx_power.attr,
4122 #ifdef CONFIG_IWLWIFI_DEBUG
4123         &dev_attr_debug_level.attr,
4124 #endif
4125         &dev_attr_version.attr,
4126
4127         NULL
4128 };
4129
4130 static struct attribute_group iwl4965_attribute_group = {
4131         .name = NULL,           /* put in device directory */
4132         .attrs = iwl4965_sysfs_entries,
4133 };
4134
4135 static struct ieee80211_ops iwl4965_hw_ops = {
4136         .tx = iwl4965_mac_tx,
4137         .start = iwl4965_mac_start,
4138         .stop = iwl4965_mac_stop,
4139         .add_interface = iwl4965_mac_add_interface,
4140         .remove_interface = iwl4965_mac_remove_interface,
4141         .config = iwl4965_mac_config,
4142         .config_interface = iwl4965_mac_config_interface,
4143         .configure_filter = iwl4965_configure_filter,
4144         .set_key = iwl4965_mac_set_key,
4145         .update_tkip_key = iwl4965_mac_update_tkip_key,
4146         .get_stats = iwl4965_mac_get_stats,
4147         .get_tx_stats = iwl4965_mac_get_tx_stats,
4148         .conf_tx = iwl4965_mac_conf_tx,
4149         .reset_tsf = iwl4965_mac_reset_tsf,
4150         .bss_info_changed = iwl4965_bss_info_changed,
4151         .ampdu_action = iwl4965_mac_ampdu_action,
4152         .hw_scan = iwl_mac_hw_scan
4153 };
4154
4155 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4156 {
4157         int err = 0;
4158         struct iwl_priv *priv;
4159         struct ieee80211_hw *hw;
4160         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4161         unsigned long flags;
4162
4163         /************************
4164          * 1. Allocating HW data
4165          ************************/
4166
4167         /* Disabling hardware scan means that mac80211 will perform scans
4168          * "the hard way", rather than using device's scan. */
4169         if (cfg->mod_params->disable_hw_scan) {
4170                 if (cfg->mod_params->debug & IWL_DL_INFO)
4171                         dev_printk(KERN_DEBUG, &(pdev->dev),
4172                                    "Disabling hw_scan\n");
4173                 iwl4965_hw_ops.hw_scan = NULL;
4174         }
4175
4176         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4177         if (!hw) {
4178                 err = -ENOMEM;
4179                 goto out;
4180         }
4181         priv = hw->priv;
4182         /* At this point both hw and priv are allocated. */
4183
4184         SET_IEEE80211_DEV(hw, &pdev->dev);
4185
4186         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4187         priv->cfg = cfg;
4188         priv->pci_dev = pdev;
4189
4190 #ifdef CONFIG_IWLWIFI_DEBUG
4191         priv->debug_level = priv->cfg->mod_params->debug;
4192         atomic_set(&priv->restrict_refcnt, 0);
4193 #endif
4194
4195         /**************************
4196          * 2. Initializing PCI bus
4197          **************************/
4198         if (pci_enable_device(pdev)) {
4199                 err = -ENODEV;
4200                 goto out_ieee80211_free_hw;
4201         }
4202
4203         pci_set_master(pdev);
4204
4205         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4206         if (!err)
4207                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4208         if (err) {
4209                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4210                 if (!err)
4211                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4212                 /* both attempts failed: */
4213                 if (err) {
4214                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4215                                 DRV_NAME);
4216                         goto out_pci_disable_device;
4217                 }
4218         }
4219
4220         err = pci_request_regions(pdev, DRV_NAME);
4221         if (err)
4222                 goto out_pci_disable_device;
4223
4224         pci_set_drvdata(pdev, priv);
4225
4226
4227         /***********************
4228          * 3. Read REV register
4229          ***********************/
4230         priv->hw_base = pci_iomap(pdev, 0, 0);
4231         if (!priv->hw_base) {
4232                 err = -ENODEV;
4233                 goto out_pci_release_regions;
4234         }
4235
4236         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4237                 (unsigned long long) pci_resource_len(pdev, 0));
4238         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4239
4240         iwl_hw_detect(priv);
4241         printk(KERN_INFO DRV_NAME
4242                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4243                 priv->cfg->name, priv->hw_rev);
4244
4245         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4246          * PCI Tx retries from interfering with C3 CPU state */
4247         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4248
4249         /* amp init */
4250         err = priv->cfg->ops->lib->apm_ops.init(priv);
4251         if (err < 0) {
4252                 IWL_DEBUG_INFO("Failed to init APMG\n");
4253                 goto out_iounmap;
4254         }
4255         /*****************
4256          * 4. Read EEPROM
4257          *****************/
4258         /* Read the EEPROM */
4259         err = iwl_eeprom_init(priv);
4260         if (err) {
4261                 IWL_ERROR("Unable to init EEPROM\n");
4262                 goto out_iounmap;
4263         }
4264         err = iwl_eeprom_check_version(priv);
4265         if (err)
4266                 goto out_iounmap;
4267
4268         /* extract MAC Address */
4269         iwl_eeprom_get_mac(priv, priv->mac_addr);
4270         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
4271         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4272
4273         /************************
4274          * 5. Setup HW constants
4275          ************************/
4276         if (iwl_set_hw_params(priv)) {
4277                 IWL_ERROR("failed to set hw parameters\n");
4278                 goto out_free_eeprom;
4279         }
4280
4281         /*******************
4282          * 6. Setup priv
4283          *******************/
4284
4285         err = iwl_init_drv(priv);
4286         if (err)
4287                 goto out_free_eeprom;
4288         /* At this point both hw and priv are initialized. */
4289
4290         /**********************************
4291          * 7. Initialize module parameters
4292          **********************************/
4293
4294         /* Disable radio (SW RF KILL) via parameter when loading driver */
4295         if (priv->cfg->mod_params->disable) {
4296                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4297                 IWL_DEBUG_INFO("Radio disabled.\n");
4298         }
4299
4300         /********************
4301          * 8. Setup services
4302          ********************/
4303         spin_lock_irqsave(&priv->lock, flags);
4304         iwl4965_disable_interrupts(priv);
4305         spin_unlock_irqrestore(&priv->lock, flags);
4306
4307         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4308         if (err) {
4309                 IWL_ERROR("failed to create sysfs device attributes\n");
4310                 goto out_uninit_drv;
4311         }
4312
4313
4314         iwl_setup_deferred_work(priv);
4315         iwl_setup_rx_handlers(priv);
4316
4317         /********************
4318          * 9. Conclude
4319          ********************/
4320         pci_save_state(pdev);
4321         pci_disable_device(pdev);
4322
4323         /**********************************
4324          * 10. Setup and register mac80211
4325          **********************************/
4326
4327         err = iwl_setup_mac(priv);
4328         if (err)
4329                 goto out_remove_sysfs;
4330
4331         err = iwl_dbgfs_register(priv, DRV_NAME);
4332         if (err)
4333                 IWL_ERROR("failed to create debugfs files\n");
4334
4335         err = iwl_rfkill_init(priv);
4336         if (err)
4337                 IWL_ERROR("Unable to initialize RFKILL system. "
4338                                   "Ignoring error: %d\n", err);
4339         iwl_power_initialize(priv);
4340         return 0;
4341
4342  out_remove_sysfs:
4343         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4344  out_uninit_drv:
4345         iwl_uninit_drv(priv);
4346  out_free_eeprom:
4347         iwl_eeprom_free(priv);
4348  out_iounmap:
4349         pci_iounmap(pdev, priv->hw_base);
4350  out_pci_release_regions:
4351         pci_release_regions(pdev);
4352         pci_set_drvdata(pdev, NULL);
4353  out_pci_disable_device:
4354         pci_disable_device(pdev);
4355  out_ieee80211_free_hw:
4356         ieee80211_free_hw(priv->hw);
4357  out:
4358         return err;
4359 }
4360
4361 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4362 {
4363         struct iwl_priv *priv = pci_get_drvdata(pdev);
4364         unsigned long flags;
4365
4366         if (!priv)
4367                 return;
4368
4369         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4370
4371         iwl_dbgfs_unregister(priv);
4372         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4373
4374         /* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
4375          * to be called and iwl4965_down since we are removing the device
4376          * we need to set STATUS_EXIT_PENDING bit.
4377          */
4378         set_bit(STATUS_EXIT_PENDING, &priv->status);
4379         if (priv->mac80211_registered) {
4380                 ieee80211_unregister_hw(priv->hw);
4381                 priv->mac80211_registered = 0;
4382         } else {
4383                 iwl4965_down(priv);
4384         }
4385
4386         /* make sure we flush any pending irq or
4387          * tasklet for the driver
4388          */
4389         spin_lock_irqsave(&priv->lock, flags);
4390         iwl4965_disable_interrupts(priv);
4391         spin_unlock_irqrestore(&priv->lock, flags);
4392
4393         iwl_synchronize_irq(priv);
4394
4395         iwl_rfkill_unregister(priv);
4396         iwl4965_dealloc_ucode_pci(priv);
4397
4398         if (priv->rxq.bd)
4399                 iwl_rx_queue_free(priv, &priv->rxq);
4400         iwl_hw_txq_ctx_free(priv);
4401
4402         iwl_clear_stations_table(priv);
4403         iwl_eeprom_free(priv);
4404
4405
4406         /*netif_stop_queue(dev); */
4407         flush_workqueue(priv->workqueue);
4408
4409         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4410          * priv->workqueue... so we can't take down the workqueue
4411          * until now... */
4412         destroy_workqueue(priv->workqueue);
4413         priv->workqueue = NULL;
4414
4415         pci_iounmap(pdev, priv->hw_base);
4416         pci_release_regions(pdev);
4417         pci_disable_device(pdev);
4418         pci_set_drvdata(pdev, NULL);
4419
4420         iwl_uninit_drv(priv);
4421
4422         if (priv->ibss_beacon)
4423                 dev_kfree_skb(priv->ibss_beacon);
4424
4425         ieee80211_free_hw(priv->hw);
4426 }
4427
4428 #ifdef CONFIG_PM
4429
4430 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4431 {
4432         struct iwl_priv *priv = pci_get_drvdata(pdev);
4433
4434         if (priv->is_open) {
4435                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4436                 iwl4965_mac_stop(priv->hw);
4437                 priv->is_open = 1;
4438         }
4439
4440         pci_set_power_state(pdev, PCI_D3hot);
4441
4442         return 0;
4443 }
4444
4445 static int iwl4965_pci_resume(struct pci_dev *pdev)
4446 {
4447         struct iwl_priv *priv = pci_get_drvdata(pdev);
4448
4449         pci_set_power_state(pdev, PCI_D0);
4450
4451         if (priv->is_open)
4452                 iwl4965_mac_start(priv->hw);
4453
4454         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4455         return 0;
4456 }
4457
4458 #endif /* CONFIG_PM */
4459
4460 /*****************************************************************************
4461  *
4462  * driver and module entry point
4463  *
4464  *****************************************************************************/
4465
4466 /* Hardware specific file defines the PCI IDs table for that hardware module */
4467 static struct pci_device_id iwl_hw_card_ids[] = {
4468 #ifdef CONFIG_IWL4965
4469         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4470         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4471 #endif /* CONFIG_IWL4965 */
4472 #ifdef CONFIG_IWL5000
4473         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4474         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4475         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4476         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4477         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4478         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4479         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4480         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4481         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4482         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4483 /* 5350 WiFi/WiMax */
4484         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4485         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4486         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4487 #endif /* CONFIG_IWL5000 */
4488         {0}
4489 };
4490 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4491
4492 static struct pci_driver iwl_driver = {
4493         .name = DRV_NAME,
4494         .id_table = iwl_hw_card_ids,
4495         .probe = iwl4965_pci_probe,
4496         .remove = __devexit_p(iwl4965_pci_remove),
4497 #ifdef CONFIG_PM
4498         .suspend = iwl4965_pci_suspend,
4499         .resume = iwl4965_pci_resume,
4500 #endif
4501 };
4502
4503 static int __init iwl4965_init(void)
4504 {
4505
4506         int ret;
4507         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4508         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4509
4510         ret = iwlagn_rate_control_register();
4511         if (ret) {
4512                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4513                 return ret;
4514         }
4515
4516         ret = pci_register_driver(&iwl_driver);
4517         if (ret) {
4518                 IWL_ERROR("Unable to initialize PCI module\n");
4519                 goto error_register;
4520         }
4521
4522         return ret;
4523
4524 error_register:
4525         iwlagn_rate_control_unregister();
4526         return ret;
4527 }
4528
4529 static void __exit iwl4965_exit(void)
4530 {
4531         pci_unregister_driver(&iwl_driver);
4532         iwlagn_rate_control_unregister();
4533 }
4534
4535 module_exit(iwl4965_exit);
4536 module_init(iwl4965_init);